DragonMaster2010
Don't Let the Fall of America be Your Fall
It's not exactly an R movie. It's actually pretty close to been kid friendly. They didn't spend all that time dropping content from a R to PG-13 just so that you could make excuses about bringging kids along.
But this movie has an adult plot as well so some might get bored of it since there's no pile on top of pile of action in it. It has a really interesting plot, build up, and music.