What's the best revenge on an ex that lied, cheated, laid hands on me and threaten to kill me?

It's been a year after the break up..he got away with way too much from calling my mother a B*%%h to communicating with females online soon after we had any type of argument. This man told several lies and despite I never seen him physically in bed with another woman, I know he cheated on me via ex gf text messaging him, plus when I ask him if he ever cheated on me he could not even place his hands on the bible barely and look me in the eye! This current chick he with I have reason to believe he was with her before we broke up, it's a long story.. but I asked her if she knew him before our breakup and she start yelling saying "look I don't know ok" and one time she even slip up in a text telling on her ownself! I'm not innocent, I cursed him out when he disrespected me..even threw something at him when he acted like he was talking to another female on the phone!!! This dude laid his hands on me three times..once he shook me..another time he dug his nails into my chest and lips which left three long bloody scars accross my chest and a cut in the inner part of my cheek that had me talk with a lipse..I confronted him one time about him talking to girls online..when I was about to leave his apt. he physically carried me back into the apt..he held me by the wrist, out of self defense I elbowed him then he tried to suffocate me with his hands, he let go told me to leave, but grabbed me by the hair and threaten to put me in a garbage can! Fast forward this azz hole is happy with a chick that befriend me, she denied the relationship but yet she is .. half on myspace.com in his apt she was my friend on myspace one time and wrote on my wall..I log in after the fact her and I stop talking to see her pic change on my wall..him calling her baby in a video because him and I were still friends on youtube. Technology told on them and I am extremely hurt and betrayed..I can't let him get away with this..please somebody give me some revenge tactics!