Define "rock" and define "band".
Bruce Springsteen and the E-Street Band
Creedence Clearwater Revival
Is Billy Joel a rock band?
Ben Folds Five
Is Elton John a rock band? I could put The Beatles, Tom Petty and the Heartbreakers, Meat Loaf, Queen, Styx, Herman's Hermits, The Proclaimers, and Kansas up there pretty high.
Other than Springsteen, though, I'm not really loyal to bands. Springsteen is probably the only group for which I have all of their mainstream releases.
Welcome to NFL Sunday! At 11:00 see Peyton Manning flip off the top rope and clothesline Clay Matthews! At 2:00 Drew Brees will hit Terrell Suggs with a chair! Buy your Andrew Luck jersey and let's get reeeeeady to rummmmmble!