I like them a little bit, although not as much as I used to. Hybrid Theory, I thought, was an excellent album, Reanimation was crap, and Meteora was okay. They do have excellent videos, for the most part. I've heard that their next album would sound more like 'Breaking the Habit' than the rest of their work, so maybe they're starting to diversify a little; the live strings on Meteora worked really well, I think.
I also think that Chester is probably one of the better singers out there today. I've heard his pre-LP stuff, with his old band Grey Daze. They sound like a punked-up STP, it's pretty good, actually. Mike Shinoda is really good at what he does, and his voice isn't like the emotionless drone that pervades most hip-hop.