Reason for the tears

Fried Green Tomatoes
"I found out what the secret to life is: friends. Best friends."
"A heart can be broken, but it will keep beating just the same."

Love Actually
When Emma Thompson's character cries
The airport montage at the end

Garden State
The end, in the airport. (Apparently, really emotional things happen in the airport...)

"My Little Girl" by Tim McGraw

When I feel helpless or stupid.

Hallmark commercials.

When my sister is upset.

When my family makes me mad.