Just google it. There's a ton. However, if you want a custom one, go to "the avatar exchange" thread stickied at the top.
Yea, you can. Just select a picture as an avatar. Not to big though
"I never liked those Deep Purples or those sort of things. I always hated it. I always thought it was a poor man’s Led Zeppelin"
// Angus Young

Quote by O-52-A-50-R
You can't get moving avatars off google. (can u?) and whats the avatar exchange?

Not images. You could do that though. Type in like "buddy icons" or something. Avatar Exchage is stickied in this forum. At the top.