Rather than hunt down links for last night's AI development, I'll just refer you to Chris Sligh fan site, which covers it pretty comprehensively.
Thoughts of my own:
1. Chris is an amazingly talented singer.
2. Simon needs to get over himself and only offer criticism he can back up with a concrete reason other than what essentially amounts to "You sound like the front man for an indy-rock band." When he said, "You don't have the best voice here..." I was waiting for him to follow up with some actual artistic criticism, like, "You're a little off key," or "You're a little nasal and your voice is thin," or "You're not passionate enough," or "Bad song for your range or timbre." But no. It amounted to, "You're a culture snob and I don't like your genre." Come on, Simon. You're the one who said it's all about the musical ability.
3. Not everyone is going to get Chris's dry sense of humor and he needs to watch that he doesn't come across as too cocky. Also, his retort to Simon, while clever (and deserved), came off as a little defensive. Stay cool, man. WE know you're good, Simon knows you're good, and you know you're good. Don't let him get to you.
4. The judges are behaving like little kids bickering in the back seat of a car on a too-long road trip. Conflict is interesting. Immaturity is just stupid and annoying.