DIDN'T ZACH RUN FOR STUDENT BODY PRESIDENT? I've yet to watch an episode of Commander In Chief, though the pilot is sitting on my TiVo for later viewing, and the news that Mark-Paul Gosselaar will be joining the cast does not exactly make my viewing more likely. What's next? Lark Voorhies joining Desperate Housewives as Alfre Woodard's cousin? Dustin Diamond joining House as a wacky but brilliant new doctor who crosses horns with House while bedding Dr. Cuddy?