I don't mind the subtle ones. The blinky ones that induce seizures, however, I could live without. (Sorry, Seawtich!)

I also think that there's a time & a place for animated gifs. If you find yourself on /b or in a LOLcats forum, then by all means, animate until you're blue in the face.

In a forum for coders, though? Probably not so much. You can get away with it, but as I said, subltety is the key.

How's that for $0.02?