in reply to Luke regarding the number of chords in a song: most of the best songs ever recorded used only three chords. i've had many arguments with my friend, a classical pianist, on this very subject. he has set me back in my place when he broke down "Stairway to Heaven" and told me which three chords Page used. from a strict theory perspective, most songs use just a few chords, and the other chords are just "in between" or transition chords (they have some fancy italian name which i can't remember).
just cause a song or a band uses a small number of chords does not make them unimaginative or uncreative, and certainly does not make their music bad.
------------------
ok, i'm not really the eggman
... and that's all I have to say about that.
[U]ALL[/U] generalizations are [U]WRONG[/U]
[/sarcasm]