VH1’s Sex Rehab With Dr. Drew might be the most voyeuristic show on television. Like Celebrity Rehab, it features vaguely famous folks — a rock drummer, porn stars — under the care of Dr. Drew. It aims for gravitas, with the good doctor lecturing them about STDs and drawing out intimate revelations about sexual abuse and rape. But putting a bunch of attractive professional spotlight-seekers together in a house with other hot sex addicts and cameras hardly seems the best way to get these folks to kick their addiction. The fun of watching reality TV with ”lessons” (Supernanny, Wife Swap) is waiting for wackiness to ensue — an element that simply has no business here. Just because the exhibitionism is voluntary doesn’t mean we should watch.