Guster, of course (some may remember when I posted as guster girl)
Coldplay
Portishead
The Refreshments
The Ramones
Kasey Chambers
Ben Folds Five/Ben Folds
Joe Pisapia
Nickel Creek
Bic Runga
311
The Postal Service
George Strait
Black Eyed Peas
Sublime
The Doors
The Who
Depeche Mode
The Cure
Peter Gabriel

and, so many many more...but, those are just a few that I could remember...

If I had to pick one, though, it would be Guster, hands down.