The first few that popped into my head...

U2
No Doubt
Red Hot Chili Peppers
Barenaked Ladies
Tom Petty
Our Lady Peace
Raine Maida (OLP's lead singer...love his solo album)
Foo Fighters
Broke City

More random artists that are on my ipod...just some of them, there's too many to list them all
311
The Beatles
Beck
Bob Dylan
The Brobecks
Jet
Jimmy Eat World
Kelly Clarkson
Muse
Modest Mouse
The Offspring
Paramore
Pearl Jam
Poe
Rock Kills Kid
Snow Patrol
Stone Temple Pilots
The Vincent Black Shadow