Oh, that's tough! Because it changes with time and with circumstance...and weirdly, I don't necessarily own some of the ones I find comforting, like how I will watch Hunt for Red October every time I see it when I'm scrolling channels.

Maybe right now:
Captain America: The Winter Soldier (because it is the best movie)
Big Eden
The Losers
My Favorite Year
Aliens (what don't judge me)