Look at Lenny and Squiggy! They bounce because they are happy! See them bounce! http://www.eviltrailmix.com/extra/lensquig.swf

For some weird reason, I keep going back and to stare at that...it's hypnotic.

Also, here's something from the creator of that particular animation, who I'm a bit of a fan of: http://www.eviltrailmix.com/extra/animuintro.swf

Here's the animations he was talking about in that little intro:





Much more nutty animations may be found here: http://www.eviltrailmix.com/animutation/

And here: http://www.eviltrailmix.com/extra/
(Be sure to check out the "Potter" animations.)

Also, his home site has more fun stuff, including a mildly impressive little home-made music video the plucky young lad whipped together: http://www.eviltrailmix.com/