Man, this is a tough one...
I've got to go with Natural Born Killers
simply for the kick-ass factor. The Fugitive was really good, but Harrison Ford was kind of a cry baby in it. Not that I wouldn't have been in his situation, but this is an "Action" movie battle and action stars should be tough guys, you know?
On a side note, I always thought Natural Born Killers
would have been a much better movie had Tarantino directed it.