I know my favorites probably aren't considered 'the best', but here they are (in no order):

Chicago
Boston
America
Europe
Kansas

(now that I've got all of the locations out of the way)

Tom Petty & the Heartbreakers
CCR
Wham
Toto
Guns and Roses
Huey Lewis & the News
Blue Oyster Cult
Dire Straits
Doobie Brothers
Dr. Hook and the Medicine Show
Van Halen
Fleetwood Mac
KISS
Queen
Journey
the Beatles
the Beach Boys
Steve Miller Band
ZZ Top
Tesla
Wang Chung
Foreigner
White Snake
Yes

And many others...

"Any American who is prepared to run for president should automatically, by definition, be disqualified from ever doing so"-Gore Vidal
"Conformity is the jailer of freedom and enemy of growth"-John Fitzgerald Kennedy
"The reason the mainstream is thought of as a stream is because of its shallowness"-George Carlin