Pro, Adobe Photoshop, and other programs for animating free? I have projects in my animation class that I don't have time to finish in class and I don't have the money to buy all that Adobe software...so I'm looking for something similar...for free

An example of what I'm asking for is like:
Q. Program similar to Microsoft Office (Word, Excel, Powerpoint) free?

A. Open Office http://www.openoffice.org/