anonymous mail

There's a jerk that's been mail-bombing me, and I can't do anything because he's root at his site. Would it be ethical to use a remailer to bomb him back? Or maybe I shoudl simply fakemail a message to alt.fan.rush-limbaugh@anon.penet.fi with his name and have the contents say something like 'Limbaugh sucks', or post to alt.sex.wanted with the subject 'SWF virgin seeks man for first time'. Any ideas on how to get someone back, or at least make life annoying?