Cats respond best to loud unpleasant noises that occur right as they're doing the thing you don't want them to do. I.e., when he bites, Yell, Clap your hands, or Hiss. Yes, hiss. You have to be the "top cat" to him. If he doesn't respond to the noises, it's time for the water bottle. But ONLY squirt/make noise when he's actually biting, or he won't get it. Be consistent, very consistent, and be patient. It'll take a couple weeks to get him to stop.
We trained our Punkin to stop pouncing and toe-biting while we were sleeping by shoving him off the bed the minute he jumped up and squirting him when he pounced/bit. It was rough for a while with the lack of restful sleep, but he now sleeps like an angel on our bed. Quadro (yes, you!!

) let him get away with a bit too much when he was young, so he still plays rough, but nothing like it used to be.
Also, if he's young, some of that will be kitten-play, so some of that will lessen simply with maturity. But don't let him think it's okay... once they do, it's much harder to get them to stop. Keep us updated! I promise this is good advice. Pro-mise.
