Question: In the original CSI there are two technical people who do the DNA testing and things like that. One of the characters' names is Greg. I don't know what the other one's name is, but I would like to know what other show he played on. My husband and I have been racking our brains trying to remember. Please let us know. Thank you. — Nicole, Billings, Mont.

Televisionary: I assume you're talking about medical examiner Dr. Al Robbins (and if you're not, I'm certain to be corrected by the legions of fans who delight in spanking me with the correction stick.)

Robert David Hall, who plays him, has kept himself quite busy throughout the years. You may have spotted him on such shows as The Practice, Family Law, Beverly Hills, 90210, L.A. Law, Touched by an Angel and The West Wing. On the big screen, Hall's appeared in films like Starship Troopers and The Negotiator.

A double-amputee, the actor is a motivational speaker as well as an advocate of those with disabilities for the Screen Actors Guild and the American Federation of Television &#038 Radio Artists.