I voted for every one except Cars2, and thats probably only because I haven't seen it yet.
Funny anecdote, I was at a college ski club house and there were about 20 people doing their own thing around the house (rather noisily I might add, but hey, thats drunk college kids) while about 5 of us watched... Grandma's Boy, I think. Anyways, movie ended, and we were flipping through the DvDs looking for the next watch when we came across Finding Nemo...
Needless to say, about 5 minutes later the entire house was dead silent and all 20 people had their eyes glued to the small TV for the next hour and some minutes... silence nonwithstanding quoting the movie as it went along of course. I think at least 3 of them had the entire movie memorized.
I saw Nemo in theaters for my 10th birthday, and damn did that movie define my childhood.