About BimBam

BimBam, formerly G-dcast, creates and distributes fun, accessible and smart digital media about Judaism for kids, adults and families who want to spend quality time online.

Our Staff

Executive Director and Producer

Sarah Lefton

Sarah Lefton is the founding Director of BimBam.

Before creating the organization as a response to her own mediocre Jewish education, Sarah produced early online experiments for The New York Times, the Village Voice, Princess Cruises, and several robotics companies. She graduated from NYU’s Interactive Telecommunications Program, where her Masters work looked at the use of Geographic Information Systems (GIS), Augmented and Virtual Reality for film and TV applications.

Sarah is a recipient of the Pomegranate Prize for exceptional educators, a recipient of the Joshua Venture Group fellowship for Jewish social entrepreneurs, and was named one of the “Forward 50” most influential Jews by the Forward newspaper. She lives in Oakland with her family, and dabbles in ceramics and urban sketching.

Associate Director

Barbara Barza

Barbara is an experienced marketing executive with a lively career path. After earning her Masters in Computer Engineering from Stanford, Barbara began work as a software developer for Xerox PARC. Barbara then followed her colleagues to “change the world,” and proudly led the product marketing team that launched the original Apple Macintosh. Barbara continued pursuing tech innovation from there, managing marketing and launch programs for a variety of innovative Silicon Valley start-ups including PIXAR. Barbara has also dabbled in robotics and worked in software development for interactive video. She has significant volunteer experience in education and a deep foundation in the Jewish community, beginning with the presidency of her temple youth group up through the co-leadership of her Temple’s sisterhood. When she’s not working, Barbara likes to hop on a bike and to travel the world with her family. Contact Barbara at Tel:(415) 935-4565 or Barbara@bimbam.com.


Jeremy Shuback

Before starting at BimBam, Jeremy worked as a title sequence designer, animator, and professional speaker. He has lectured in over a hundred cities across the US on subjects including How to Design, How to Create Commercials, and How to Market with Social Media. In addition, he’s taught over 30,000 people through his online crash courses. Before getting into teaching, he worked at a variety of animation companies. He worked on flash animations at Animation Collective, 3D film animations at Filmworks/FX, on video games at Heavy Iron Studios, and in TV under Dan Harmon for a short lived show, acceptable.TV. Add in a dash of performing, practicing, or watching improv on a nightly basis and you start to get a good idea of who he is.

The grandson of a Rabbi, he’s always been deeply involved in his Jewish Community. He’s led High Holiday services, staffed literally dozens of Jewish retreats and trips, and worked as a Hebrew School Teacher for years. He’s thrilled to now be living in San Francisco, and gets a real kick out of writing about himself in third person.

Managing Director

Jordan Gill

Jordan has spent over 20 years in and around the Jewish Non-Profit world, including long-term affiliations with Camp Tawonga, Jewish Free Loan of Los Angeles, and Hebrew Free Loan of San Francisco, where he was the Director of Development for more than five years.  Most recently, Jordan served as the Director of Global Accounts for an ad-tech start-up based in Netanya, managing a portfolio of clients with annual ad revenue of nearly $20M.  He holds an MFA in Creative Writing from Mills College and a certificate from the Lilly School of Philanthropy at Indiana University.

Studio Office Manager

Richa Pokhrel

Prior to joining BimBam, Richa worked at various nonprofits both in the US and abroad. She received her Masters in International Development and has worked in Japan, Nepal, and England. She lives in Oakland with her husband and dog. In her free time, she edits a Nepali Women’s blog, writes short stories, and enjoys the outdoors.

Key Advisors

Amichai Lau-Lavie


Lisa Lepson

Executive Director
Joshua Venture Group

Evan Hirsch

Engine Co. 4

Matthue Roth

Writer, Poet, and
Game Designer

Mani Honigstein


Debbie Heimowitz

Kids & Family Content Strategy
Caticorn Entertainment

Alicia Jo Rabins

Poet, Musician, Performer
and Jewish Educator

M. Evan Wolkenstein

Director of Experiential Education
Jewish Community High School

Yury Polnar

Global Lead, Creator Growth at YouTube

Ralph Guggenheim

Media Producer, Alligator Planet
Co-Founder, Pixar Animation Studios

Janet Harris

Director Early Childhood Education
Jewish Community Federation

Dr. Zvi Septimus

Department of Near Eastern Studies
Cornell University

Matthew Siegel

Manager of Current Series
Disney Television Animation

Board of Directors

Sam Baker

As Senior Vice President of SpringHill Ventures, Sam is involved in all aspects of managing the Company’s real estate development projects. Within his role on the executive team, Sam plays a key part in molding and implementing the strategic direction of SpringHill’s developments. Sam also oversees all financial activities and analysis for the organization and manages and coordinates third party contractors, including contract negotiation, scopes of work and development plan implementation. Sam has over 15 years of experience in real estate finance, private equity investment, asset management and accounting. Prior to joining SpringHill Ventures, he spent 10+ years in New York working for BofA Merrill Lynch, Clarion Partners and Blackpoint Partners. Sam oversaw investment management functions for these private equity and development firms specializing in opportunistic retail, office, multi-family and land investments. Throughout, he has directed leasing, construction and property management activities, representing both active and passive stakeholders, for properties and portfolios across the country. Overall, he has been a major contributor in the acquisition and value-creation of over 10 million sf of real estate with a combined value of over $2.5 billion.

Born and raised in the Bay Area, Sam earned his MBA from Columbia University and a Bachelor of Science in Business Management from Tulane University. Sam currently lives in Mill Valley where he and his wife are tirelessly trying to get their three young daughters to love the outdoors as much as they do.

Lisa Colton

Lisa Colton is the Chief Learning Officer at See3 Communications, and the founder and president of Darim Online. Her works centers around how nonprofits align themselves for success in the digital age, with a particular emphasis in the Jewish community. Much of Lisa’s energy focuses on helping people and organizations innovate, and helping innovators mature and strengthen their work.

Lisa is a graduate of Stanford University, and attended The Pardes Institute of Jewish Studies and Livnot U’lehibanot. Lisa lives in Seattle, WA with her family, where she’s a partner of the Kavana Cooperative, and is currently fostering a bunny named Caesar.

Matthew D. Gershuny

Matthew is the Director of Research and the lead Portfolio Manager of the Parnassus Mid Cap Fund. Prior to joining the firm, Mr. Gershuny was a Vice President of Equity Research at Cowen and Company. Before that, he held various equity research and asset management positions at UBS Securities.

Mr. Gershuny received his bachelor’s degree in philosophy from Cornell University and his master’s degree in business administration from the University of Michigan.

Sarah Lefton, Founder

Sarah is a graduate of NYU’s Interactive Telecommunications Program, a Pomegranate Prize winning Jewish educator and an uncompromising creative director with experience at the New York Times, Grey Advertising and several media and entertainment tech start-ups, bringing commercial technology and design skills to bear in the nonprofit world. Her work has been featured on NPR, in the Wall Street Journal and CNN.com. A recipient of the Joshua Venture Group fellowship for Jewish social entrepreneurs, she was named one of the “Forward 50” most influential Jews by the Forward newspaper.

Roman Polnar

Roman Polnar was born in Moscow and immigrated to the US with his family in 1990, moving first to New York before settling down in San Francisco.
Roman began his career in the financial services industry over 16 years ago and founded Pillar6 Advisors, a financial planning and wealth management firm with a lifestyle focus, in 2010.He’s a passionate believer that life is best lived with a strong connection to one’s community, family, career, health and values. And its with this guiding philosophy in mind that Roman is committed to BimBam’s vision of providing engaging learning experiences with core Jewish values for our children and young adults.Roman lives in San Francisco with his wife, Sabina, and their two young children, Ellie and Zev.

Galyn Susman, President

Galyn is a producer at Pixar Animation Studios. She joined the company in 1990 working on TV commercial production as a technical director, animator, and producer. Her first work on a feature film was for Toy Story, where she modeled, shaded, and supervised lighting. Galyn continued in the technical disciplines until 2003 when she joined the crew of Ratatouille as Associate Producer. After the film’s completion she produced live action documentaries and short films for DVDs as well as two Toy Story television specials.

She is currently the producer for the upcoming Toy Story 4. Before arriving at Pixar, Galyn was conducting graphics research and development at Apple, where she was a part of the team that made a short film entirely on Macintosh computers. She cites this project as the tipping point for choosing her current career. Galyn is a graduate of Brown University and lives with her husband and children in Piedmont.

Joshua Weinberg, Past President

Josh is the Principal at the Digital Life Group, where he helps companies develop and market products that inspire passion and excitement. Since 1989 he has helped companies introduce successful technology products to the consumer marketplace, drawing on his extensive professional launch, product advising and public relations experience as well as his deep technical knowledge.

During his career, Josh has successfully launched a wide range of products for clients and technologies ranging from toys for Intel to cell phones and the PlayStation 3 for Sony. Recently, Josh launched Cisco’s hybrid cloud solution, and Truveo.com, the widely acclaimed video search engine; PushPin, Placebase’s dynamic online mapping product; QiGO, the Internet experience key introduced at Walt Mossberg and Kara Swisher’s D5 conference; and PairUp the social networking service for travelers that won the DEMOgod award at the DEMO conference.


BimBam is a 501(c)3 non profit organization made possible through the support of many foundations, individuals, organizations and families. Each of our contributing donors is passionate about the power of digital media to engage people in Jewish learning and life.

Please consider joining our list of donors by contributing to BimBam today. Click here to make a donation.
Contact Barbara@bimbam.com | Tel: (415) 935-4565 to learn more.

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