Hmmzerz... I liek:
*opens up iTunes*
These are just mai very favs:
Flow
Daughtry
Daniel Powter (mainly "Bad Day" lol)
Fall Out Boy
The All-American Rejects
The Fray
Green Day
Smash Mouth

... yeah... what are your favs?

My all-time favorites ever are:

Imogen Heap
Rihanna
Chiodos
Evanescence
Yoko Kanno
i would list Frou Frou, but that's practically the same as Imogen Heap, so yeah.
Nightwish
Origa
System of a Down
........some othersss i forget |D

Ooh, favorite bands and singers. Well then.

Rob Thomas and Matchbox Twenty. Rob Thomas sings in Matchbox Twenty, but yet not all of the songs are listed as Matchbox Twenty; some are listed as Rob Thomas. I don't get it, but hey. Some of my favorite songs are Little Wonders (Rob Thomas), Ever the Same (Rob Thomas), and How Far We've Come (Matchbox Twenty).

Nickelback. My favorite songs by them include If Everyone Cared, Savin Me, Far Away, Next Contestant, and so many more. They're awesome. =D

Evanescence. Another awesome band. There's not many songs of theirs that I don't like, but my favorites include Whisper, The Only One, Bring Me to Life, and Taking Over Me.

Coldplay. I've only heard two of their songs, Clocks and Speed of Light, but I like them, so yay. =)

Goo Goo Dolls. I think the name's funny, but there's some songs I like. Buuut at the moment I can't remember what they're called. Different songs stuck in my head at the moment, y'know?

Green Day. I haven't listened to them much lately, but I like Boulevard of Broken Dreams and Holiday.

There's also a bunch of random songs that I like, but I don't feel like listing them all here. XD

Let's see...
Tim McGraw (I almost love all his songs)
Ronnetes
Travis Tritt
Shania Twain
Cris Le Doux