If it looks really good and most of us want to see it....We go to the movies...If not we wait til the DVD...Last movie we saw was....Prince of Persia....My 11 and I really really wanted to see it.....But The Lightning Thief...looked so-so....so we waited for the DVD....
We mostly do on demand. I have been to the movies twice so far this year! I would say we usually go maybe twice a year. It's so expensive and I would much rather be comfy and sit on my couch at home!
If it is a movie that I figure will look better on big screen, or if it is a chick flick, or a movie that I am anxious to see, then I'll see it in the theater.
Not very frequently. I might take the kids every so often, but it's easier to wait until it is on DVD. that way I can pause it to go to the bathroom, and not spend as much on snax.