Here's a puzzle

'Jackass' for Girls:

MTV has an unqualified hit on its hands with "I Want a Famous Face," the show about young people who go through painful, often grueling plastic surgery to look like their heroes.

Everyone needs a hobby!

Last Tuesday, the show followed a pretty but otherwise normally endowed Texas girl named Sha as she gets breast implants in order to look more like Pam Anderson.

Her goal is to pose for Playboy.

In earlier episodes, twins underwent surgery to look more like Brad Pitt, and a 21-year-old, plus-size model from Florida got a full-body tuck to look more like "Titanic" star Kate Winslet.

Nothing like striving to attain. And I don't want to know the details of a "full-body tuck".

"I Want a Famous Face" has been a surprise - and unlikely - hit for MTV.

The show has been ranked in the Top 10 shows for young viewers (people between 18 and 34 years old) nearly every week since its debut in late February. (In fact, two repeats last week were ranked in the Top 15, tied with the NBA game of the week.) And the success was almost totally by word of mouth.

Still, officials at the network have not decided if they will order a second season. The current flight has only three more episodes left - including a Chicago woman who undergoes surgery to look more like Jennifer Lopez and a guy who longs to be more Elvis-like.

"It is under discussion, but no decision yet," says an MTV spokeswoman.

That is practially unheard of in the TV world, where success is so rare that there is usually no question of whether to keep a hit going.

But some viewers seem to think that MTV is encouraging - even paying for - the expensive face lifts, lipo and implants these kids crave.

Maybe they could convert it to a "Psychiatry Case Files" show?

The producers have thrown in plenty of cautionary tales to warn off the less-than-committed. One whole segment is devoted to next week's star, Cassandra, getting her implants removed after suffering arthritis and memory lapses.

Sheesh. I seem to remember that about 20 years ago there was an MTV cable network that played rock music videos. I wonder what happened to it?