Since you didn't specify what kind of music you like, I must speculate; therefore, listen to a bunch of:
Ween
Volbeat
Voivod
The White Stripes
The Who
Them Crooked Vultures
The Sword
Sublime
Rush
Rolling Stones
Queen
The Police
Pink Floyd
Metallica
Meat Puppets
Led Zeppelin
Jimi Hendrix
Iron Maiden
Genesis
Evanescence
Eric Johnson
Eric Clapton
Electric Lights Orchestra
The Doors
Dire Straights
Dio
Def Leppard
Cacophony
Blues Traveler
Billy Talent
Billy Joel
The Beatles
Audioslave
AFI
AC/DC
There's a decent list to get you started off; the discographies of the abovementioned bands should keep you busy for a long, long, long time.  They're in no particular order, but if I were you I'd start with Pink Floyd, The Who, The Doors, The Beatles, Led Zeppelin, and Genesis before moving on to the rest of the list.