My boss is a pervert...what should i do?

Is there any way that you can plant some sort of "nanny cam" in your office, or his, wherever this behavior takes place? You can also try to record the conversations. Also, document everything he does, date, time, place, if there were any witnesses, etc. Once you have a good amount of proof, you need to take copies of it to the human resources department and report him. If they try to blow you off, let them know that you aren't afraid to get your own lawyer and report him. If you make the information public, he can and will lose his license to practice the law, they are very tough on ethics and lawyers! Also, you need to tell him that you don't like what he's doing, he may take your silence to mean that it's ok or at least that you won't tell, and that's what he's counting on. He gets off on your fear and the power he has to keep you silent, don't let him win this!