Oh man, too many to name. This is a stupid long list, and it no where near covers it. I...can't pick favorites (well, The Beatles redefined my life. Legit. So glad the Antholgies came out in the 90s).
The Beatles (and their independent projects)
Bob Dylan
David Bowie
T-Rex (Glam rock and the folky stuff Bolan did with Steve Took)
Eric Burden/The Animals/War (them after Burden, too)
Herbie Hancock (soooo good)
Prince
Blue Oyster Cult
Pink Floyd
some Uriah Heep
Ten Years After
Bad Finger
Cameo
Chuck Berry (damn, I almost got to see him before he passed)
Wishbone Ash (everything they did is solid gold)
Traffic
Warren Zevon
It's a Beautiful Day
Kyu Sakamoto
Gah, too many to mention from all different genres
Newer? Kinda? At least, I should say closer to my generation (sorta? I dunno)
Lady Gaga
Of Montreal
Blitzen Trapper
Nicky Minaj (yeah, I guess she's in some sh*t now, but I still like some of her old stuff)
Ginger Root (just discovered them! I guess they could be "older" sounding)
Chemical Brothers
Yuzu (at least, one album)
EnVogue
Asian Kung Fu Generation (their albums are just, just great straight up rock n roll)
Mass of Fermenting Dregs
Metric
Infected Mushroom
OutKast
La Feme
Church of the Cosmic Skull (holy crap...LOVE this band. So underrated)
MGMT
TLC
Susumu Hirasawa (gah, I can just put a playlist of his stuff and work all day)
Also too many to list. Did I say too many to list? Because yeah. Just depends on my mood! I've been getting more into a lot of jazz recently, so no the list is expanding even more XD
Edit: I am so sorry this is so long D: I just...LOVE music XD XD XD