Here's something cool - the Coding4Fun site. It's created by hobbyists for like-minded people, and there's some interesting projects on there (motion-detecting baby monitoring application anyone?) There's also a whole section devoted to game development and a series of tutorials to get you started.
Sounds like Port25 has been listening; they're now providing movies as AVI files. For some reason many open source enthusiasts don't seem to be super keen on using WMV files :) But the site looks like it's off to a great start.