Let's admit it, we're all heartsick about the Rush Limbaugh situation. I live one county south of him here in Florida, so I get to read about it locally.
Basically, if they can prove that he was doctor shopping, i.e. going to two or more doctors concurrently and soliciting the identical prescription, then he can go to jail. They raided the offices of some doctors and got some evidence, presumably not "doctored". Rush is fighting the search warrants based on a narrow interpretation of patient-doctor privilege, but it sure as heck sounds as if they got the goods.
He and his friends (including Matt Drudge, another neighbor) claim that no one gets prosecuted under these laws. Well, that didn't help Abe Fortas, when I was a kid, or Michael Milken a bit later. When you're high profile, any ambitious D.A. will want to feather his cap and his bed by taking you down, Democrat or Republican.
Rush officially denies the doctor shopping. I hope that turns out to be true; we all owe him a great deal.