...what's so creepy about him putting his hand over his heart? You people are just paranoid. Maybe if James Holmes himself had done the same thing, it'd be weird..
Obvious answer is obvious. Due to the timing (about a week after the shooting), you can imagine a theater full of people might be a little put-off by a single person doing something completely out of the norm from dead-center in the theater.
EDIT because I just saw the other quote and re-read my post:
Damn, you've got to be kidding!? He actually put his hand over his heart!? What a weirdo, who on earth does that, especially during the national anthem? You should of went over to him and said, "Hey, stop showing respect for the national anthem" and then broke him.
Edit: I meant National Anthem, not pledge of allegiance.
Yes, he stood up as well. Excuse my lack of specificity.