He was by far the most vocal audience member, giving commentary throughout, and singing on one occasion. (Nothing too obnoxious, and the theater was full of other parent-kid combos like us, so we were not "those" people.)
He lasted 3/4 of the way through - longer than both Marc and I thought he would. So we all left happy campers.
We saw the movie Rio. (Very good, by the way.)
Marc and D, on the way to the theater.
There he goes!