How will the producers of NCIS make sure that fans tune in to the show they don't switch the channel after the end credits and stay put for NCIS: Los Angeles, the spin-off? One way will be with crossovers. We've already reported the Rocky Carroll will appear on both shows, now comes word that NCIS mainstay Pauley Perrette will do a two-episode stint on NCIS: L.A.

And they aren't waiting for the guest stint. In the second episode, Perrette's brilliant, goth scientist character, Abby Scuito, will do a "fun little cameo" according to exec producer Shane Brennan.

It's the end of an era on CSI. The Las Vegas Crime Lab is losing the head man. Gil Grissom is packing up his office and leaving Las Vegas. The night shift supervisor, the most influential scientist on the staff, Dr. Gilbert "Gil" Grissom will be a character that won't easily be forgotten, let alone replaced.

If Laurence Fishburne is wise, he'll work with the producers and writers to make Raymond Langston a very different kind of leader.

Looking back at the Grissom years, there are distinctive beats that William Petersen brought to the character and the show. To me, there are six reasons why Grissom will be hard to replace.

CBS' Crime Scene Investigation franchise has done well with shows like CSI, CSI: Miami, CSI: NY, and CSI: Plus Calcium, but what about CSI: Mozart? That's what a TV station in Austria dubbed a forensic analyzation of a human skull which may or may not have belonged to the famous composer. The story goes that Mozart's skull was removed from his grave ten years after his death by the same man who buried him. The skull was kept on display before being moved to a safe in the Mozarteum in Salzburg. Tests, unfortunately, proved inconsequential, though I'm not sure that really matters. It's not like it's his brain or anything, which, had it been preserved, would be much more interesting to study, and/or feed to a bear. At any rate, I think the scientists who studied the skull's DNA may have a great idea for a new show on their hands, one in which investigators study a different deceased celebrity's skull in each episode. They could call it CSI: Famous Skull Unit. I'd watch something like that.