1. Hold me.
I can't.

2. Do you know what the scariest thing is? To not know your place in this world, to not know why you're here.

3. Grandpa, if you had a chance to go back and do it all differently, what would you have changed?
Well, I would have taken better care of my teeth.

4. Have we shown you how to start a nuclear war yet?
Er...no

Any guesses, people?

Edited to Add: Apparently nobody gives a damn but for posterity's sake, here's the list of movies those lines are from.
1. Edward Scissorhands
2. Unbreakable
3. Peggy Sue Got Married
4. The Queen