Here’s some software for those of you who are interested in animation without the interactive abilities of Flash (Read animation only). Synfig is a high end vector animation package for OSX, Windows and Linux that offers a lot of professional features for free. So if your interested in the type of animation you see on Cartoon Network give this a try. I haven’t personally used this software but the feature list looks very high end and who can argue with the price.
And another one that competes with ToonBoom Studio. Again Open Source and available on most platforms.