Keep in mind I'm almost postive my son has ADD and he LOOOVED Yo Gabba Gabba last year and he was amost three at the time.
We started movies at 3 1/2 and did Disney on Ice in February. He HYPER FOCUSED the entire time. We have seen: Yogi Bear (twice), Tangled, Cats and Dogs, Alpha and Omeaga and Hop. He actually sits down, has a snack and even tells me when he needs to go potty. I LOVE that he behaves and most importantly ENJOYS these outings.
We even have done a couple children's plays and he'll focus on anybody that isn't wearing shoes (what is THAT about?) but other than THAT he's my little "theatre" buddy.
We are LITERALLY counting the days until "Cars 2" comes out in June. We'll probably go every other day. (I already have a fund started for it.)
BTW, I was worried about the first movie and mentioned it when we bought tickets and the guy said to come back and they would refund our money. Glad we didn't have to do that, Yogi Bear was kinda funny!