Checking yourself into rehab for alcohol (Lindsay), drugs (Mary-Kate), or just a case of the crazies (Britney), is so last season. Lately, the buzzword in compulsive behavior is sex. David Duchovny was recently admitted to rehab for sex addiction. The new movie "Choke," by the dude who wrote "Fight Club," is a twisted look at the life of a sex addict. And VMA host Russell Brand has copped to receiving treatment for sex addiction.

In the media and around water coolers, sex addiction doesn't get much respect. It doesn't cause cancer, harm your liver, or lead to embarrassing drunk-dials (though it is dangerous to mix with driving). Everyone likes sex, right, so what's the fuss?