I've always liked Linkin Park. The band's music is melodic, has a great beat, and pulls off both hardness and softness really well. The rap rock style works nicely and all of its music exceptionally well produced.
The first two singles off the band's new album, 'Minutes to Midnight', though, are particularly good. 'What I've Done' was good in it's own right but it got so much cooler when it was featured as the closing track for 'Transformers' (2007) and I really like the slightly-harder-than-U2 sound they've chosen for 'Shadow of the Day'. I guess it pays to have Rick Rubin as your producer, doesn't it? :)
I'll now have to give the whole album a listen. I'm sure it won't disappoint.