My favourite uses of music over movie credits (in no particular order):
Wake Up – Rage Against the Machine – The Matrix
Extreme Ways – Moby – The Bourne Films
The Hearts Filthy Lesson – David Bowie – Seven
I think it’s the adrenalin rush at the ends of each of the movies combined with the thump of the music. I also think it’s that I knew each song before each movie, so when they started up over the credits I knew exactly where the movie’s head was at (so to speak) and was in the same place. Plus (let’s ignore the later films), what exactly is going to play over the end of The Matrix if not Rage Against the Machine?