You like classic rock? How about Led Zeppelin? What about glam rock? You know, Van Halen, maybe Meatloaf?
Howzabout Queen? Keane? Jack's Mannequin?
Weezer seems like a great choice for you, since they're basically a precursor to Vampire Weekend's rocktonic sound...plus, they just straight up rock.
Oh, if you like DCFC, you'll like the Postal Service since, you know, they're basically the same band. Also, Explosions in the Sky is a REALLY cool instrumental band, so if you like super mellow, chilled out instrumental rock, I'd check them out. They're great when you gotta do work, and just need to veg.
Pedro the Lion
Snow Patrol
Jimmy Eat World
The Bravery
The Fray
Modest Mouse
Deep Purple
Of course, none of these are original suggestions. I just went to
www.Pandora.com, an excellent website that uses the Music Genome Project to identify similarly sounding bands to the ones you like, and plays 'em for free. It's a win-win situations: All these artists get to be heard for a small sum, and you get great, free music! Check it out! Or, if you prefer not to, I'll just keep posting new band suggestions as they come up.