http://www.bbc.co.uk/radio1/zanelowe/
Lots of new modern rock on this guys show, along with dance, top 40. Huge emphasis on new music. Zane Lowe is very respected in the industry.
As an example, Arcade Fire leaked their first two singles to him. Go through the track lists and listen to a few of the shows in the media player. Anyone I've ever showed this guy to has been extremely happy I did. Probably the strongest radio DJ out there.