My personal favorites are:
Linkin Park
OneRepublic
The Beatles
Daft Punk
Trocadero
Plain White T's
All American Rejects
Cage the Elephant
Cavo
Carolina Liar
Coldplay
Lifehouse
Daughtry
Flobots
Fort Minor
Five for Fighting
The Fray
Green Day
O.A.R.
and Ryan Star
I like a lot more but that's all of my favorites.