A movie I can't turn off even thought I have seen it a hundred times is a comfort movie.
The Neverending Story
Labyrinth
Moby Dick (Gregory Peck)
Lord of the Rings trilogy
Obviously reality stopped being my friend when they started showing it to me on TV.
I basically align with relativism, but sometimes I want to escape into a simpler, dualist, black and white world. For this sort of movie comfort food, you can't go wrong with a good old-school western where it's clear who the good guys are and who the bad guys are and what's motivating everyone. My fave in this genre would be Winchester 73. The bad guys took Jimmy's gun and this will not stand!
Other films I'll watch again and again to take me to that happy place...
The Princess Bride
Roman Holiday
The Black Swan
The More the Merrier
Bringing Up Baby
My Man Godfrey
Raiders of the Lost Ark
Star Wars IV and V
Dinner at 8 with Jean Harlow and Wallace Beary from the 30's would be good if you liked My Man Godfrey. Another of those great escapist movies of the depression era.
The Wizard of Oz...it's been my favorite movie since I was 4 years old. Even though I have watched well over 100 times and have every line memorized, I still get excited when the opening credits play.