Hey, Kevin Garnett, you're the highest-paid NBA player, you've scored a nifty Nike endorsement deal, and you stole a starting spot from Karl Malone on the NBA All-Star team. What are you going to do next? Produce a sitcom, of course. Garnett, Brad Grey Television, and Hungry Man, the masterminds behind ESPN's clever promos, are quietly developing a script for Fox that's inspired by the real-life Garnett posse — a crew of buddies he's dubbed the Official Block Family, who live off the NBA superstar in Minnesota (think The Monkees meets The Beverly Hillbillies). The 23-year-old Timberwolves forward will likely not star in the sitcom but will executive-produce and possibly introduce episodes. It's unclear whether the concept will make it to air this fall — Fox has yet to order a pilot and BGTV doesn't want to rush the project — but industry types already see Garnett's crossover potential. ''This guy — assuming he keeps on doing what he's doing — is the next Michael Jordan,'' says BGTV president Kevin Reilly. ''He's a superstar personality and a superstar athlete.'' Yeah, but just wait for those superstar contract negotiations.