Here are some of my favorite bands (all genres, not in order of importance):
Van Halen
Crash Test Dummies
Chicago
Oak Ridge Boys
Journey
Lynyrd Skynyrd
Alabama
Styx
Pink Floyd
ZZ Top
Aerosmith
Led Zeppelin
Rolling Stones
Eagles
Statler Brothers
Beatles
Bee Gees
Four Tops
Def Leppard
Exile
Foreigner
The Who
Doobie Brothers
Temptations
Creedence Clearwater Revival
Crosby Stills, Nash & Young
Little River Band
Van Halen
Crash Test Dummies
Chicago
Oak Ridge Boys
Journey
Lynyrd Skynyrd
Alabama
Styx
Pink Floyd
ZZ Top
Aerosmith
Led Zeppelin
Rolling Stones
Eagles
Statler Brothers
Beatles
Bee Gees
Four Tops
Def Leppard
Exile
Foreigner
The Who
Doobie Brothers
Temptations
Creedence Clearwater Revival
Crosby Stills, Nash & Young
Little River Band