I'm not sure what my favorite movie of all time is but one I REALLY liked that I've thought of recently is The Dark Knight. I like it because I'm a big Batman fan and the Joker was finally done right as a deeply disturbed man with a crazy urge to cause chaos.
The best movie I've seen in the last month or two is either Avatar, The Hurt Locker, or Sherlock Holmes.
Favorite action scene? I have no idea.
I don't have a particular romance scene but my favorite romance movie is definitely Molan Rouge.
My favorite movie quote or diaglogue is either "Frankly my dear, I don't give a damn." (Yes, I know. I chose the number one rated quote ever but I don't care. It's an awesome quote.) or one of the Joker's little stories about how he got his scars.
And my guilty pleasure movie is Mean Girls lol