Are there any movies you watch when you're feeling anxious or depressed? If so, what are they, and what about them calms you down and/or lifts your spirits?
The Big Lebowski. It got me through probably the toughest time of my life and has remained my ultimate comfort movie. I love everything about it, and seem to catch something new every time I watch it. Brilliant movie; fantastic acting and story. There's nothing else like it.
I also love Mean Girls, because it's just silly and reminds me of how stupid and petty life can be.