Brothers Gregg and Evan Spiridellis are the kings of online animation. If you haven't visited JibJab.com, you just aren't wasting enough of your time online. They weren't exactly struggling before the 2004 presidential election (their list of commercial clients is actually pretty impressive), but their fame grew by a few magnitudes with the release of their parody of Woody Guthrie's "This Land". They had waaay too much fun poking folks on both sides of the political divide.

Visit JibJab's web site and check out their mix of videos and Flash animations (don't forget to move your mouse around the screen to find all the goodies on these).