Ghostbusters is one of my favorite movies of all time. I went to see it three times at the theater. I never do that.

Dr Ray Stantz: Everything was fine with our system until the power grid was shut off by dickless here.
Mayor: Is this true?
Dr. Peter Venkman: Yes it's true.
[pause]
Dr. Peter Venkman: This man has no dick.
Dr. Peter Venkman: Well, that's what I heard!

Clueless has some great lines of it's own.

Mel: Anything happens to my daughter, I got a .45 and a shovel, I doubt anybody would miss you.

Definitely see both.