well from what you say you listen to already, I don't think you'll like what I recommend, but I'm going to say what I listen to anyways and maybe I'll convert you.
Incubus, older Chili Peppers, Billy Talent, Michael Jackson, MxPx, Offspring, 30 seconds to mars, Gym Class Heroes.
and on those mellow days:
Deathcab, Spillcanvas, Panic At The Disco (Pretty.Odd.), Fall Out Boy, The Format, Michael Jackson, Incubus, Postal Service, Weezer