Reply #5: Rush and Pink Floyd

[Rabrrrrrr]

Madonna
David Bowie
George Clinton (funk is kinda R&B, right?)
David Cross
Ellen Degeneres

But they would go in this order:

George Clinton
Ellen Degeneres
David Bowie
Madonna
Rush
David Cross
Pink Floyd

And the encore would be a 25-minute funk version of Sheep (Three Different Ones) with Lee, Lifeson and Gilmore trading multiple solos, sung by Bowie and Clinton, some kind of politically releveant video done by David Cross, and Ellen and Madonna just rolling around on stage naked being shown on the jumbotrons and voicing the essential background screams (not sexual screams, but real bona fide screams), and at the end, the Mothership takes 'em all up with lots of fireworks and smoke and explosions and stuff.