I think it's probably understood that we all like our own avs to some degree or another, seeing as we chose them. (On that note, out of mine, the CAKE! one is my favorite. And I will probably put it back up after Mr. Anime Universe.)
I usually get a giggle out of FC and Copycat_Revolver's avs. But my all time favorite is probably CorpseGoddess's Gaston av. (Which apparently she just put back up. *^_^*)