All of Steven Seagal's films. Environmental issues, corruption, greed, and stonefaced badassness. How much deeper can it be?
Seriously though,
Bubba Ho-Tep is a marvelous little indy-film starring Bruce Campbell from Evil Dead-fame with an incredibly silly premise which turns out to be a touching tale about friendship, institutional life, and sacrifice (among other things). Plot outline from IMDb: Elvis and JFK, both alive and in nursing homes, fight for the souls of their fellow residents as they battle an ancient Egyptian Mummy..