You don't just need money to make your film or video; you'll need money after the work is done for marketing and promotion, festival entrance fees, making duplicate copies, and more! Things to think about: Production costs, Duplication costs, Promotional Costs, Festival costs, and Distribution costs.

Here are some useful funding links:

AAUW Community Action Grants
Corporation for Public Broadcasting
Grant Guidelines for NEA's Challenge America
Intel
New Voices Fellowships for Non-Profits
Rosie's For All Kids Foundation
Starbucks Foundation Literacy Grant
The National Cristina Foundation
Youth Venture Helps Youth Get Started
Active Element Foundation
Third Wave Foundation
New World Foundation
Technology & Learning Online
NEC Foundation of America

More at YMDi.org:
Production costs
Duplication costs
Promotional costs
Festival costs
Interactive budget