I know I saw something, but I can't remember the theater now. Try searching meetup.com for movies and kids or mommies. I can't remember exactly, but I am pretty sure there was a meetup group about it.
I know that studio movie grill has summer specials for kids. I believe they play a different movie each week (all kids shows though), for the whole summer. Just $1 a ticket : )
Re: Baby friendly movie theaters?