On CBS's The Big Bang Theory, we've met Sheldon's mother. Emmy-winner Laurie Metcalf appeared in season one as a super-religious Texas mama who knows better than anyone how to get to Dr. Sheldon Cooper. Now, Leonard's mother is going to be introduced, and she's equally as accomplished as Ms. Metcalf.

Tony, Emmy and SAG award winning actress Christine Baranski will be Leonard's mom, Dr. Beverly Hofstadter. That's right, she's a brainiac.

Her specialty is research on the human brain, and according to Bill Prady, Big Bang's executive producer, "There's the possibility that Leonard is the least successful in his family, that his parents always pushed him toward academic success." Sounds like a funny set up to me.

We told you a while back about the plan to have the writing staffs of CSI and Two and a Half Men swap places for one episode. Looks like that plan is going forward. Two and a Half Men creator Chuck Lorre even has the plot for the CSI episode: he's going to kill Roseanne Barr or Cybill Shepherd.

OK, they won't be on the show, but Lorre's plot revolves around the killing of a "sitcom diva." Lorre worked for several years on both Roseanne and Cybill (he created the latter), and both shows were notorious for behind the scenes friction and firings and chaos. And who does Lorre want to have play the sitcom diva? Shepherd's costar Christine Baranski, who didn't exactly get along with the star of the show (or vice versa).

Now the only question is: who will the killer be? (Second question: what plot will the CSI writers come up with for Two and a Half Men?)

Moonlighting actress Cybill Shepherd will be joining the cast of The L Word for an eleven episode story arc starting in early 2007. The actress will play the Executive Vice Chancellor of California University and the boss of Bette Porter (Jennifer Beals). Her character is a married woman with two grown kids, but she begins to question her sexuality. Yeah, I know, I probably could have guessed the "questioning her sexuality" part, too. She joins Marlee Matlin, who was added to the cast recently. Actress Javina Gavankar is also joining the Showtime series.