I've touched on it before...
But it can never be too much of it...
Highwaymen was the epithome of a supergroup:
Willie - the criminal one
Kris - the handsome one
Waylon - the bad ass one
Johnny - the Legend himself
Awesome vid, Silver Stallion (notice how they've just put Kris on the spot to be good-looking):
Live version of Highwayman (listen for the differences in crowd reactions, Kris get the ladies, Waylon the guys, et al):
Me and Bobby McGee:
I'll throw in a bonus track as well, "Jackson", with the First Family of Country, June Carter Cash and Johnny Cash:
-Hedge