AFI has come out with their top 100 movie quotes of ALL TIME!

http://www.afi.com/tvevents/100years/quotes.aspx#list

Some of my faves from the list:

Frankly, my dear, I don't give a damn.

Fasten your seatbelts. It's going to be a bumpy night.

What we've got here is failure to communicate.

You can't handle the truth!

After all, tomorrow is another day!

Gentlemen, you can't fight in here! This is the War Room!