Katee Sackhoff On The Big Bang Theory

"The Vengeance Formulation" -- "Battlestar Galactica" star Katee Sackhoff appears as herself, offering Wolowitz (Simon Helberg)some relationship advice on THE BIG BANG THEORY, Monday, Nov. 23 (9:30-10:00 PM, ET/PT) on the CBS Television Network. Photo: Cliff Lipson/CBS ©2009 CBS Broadcasting Inc. All Rights Reserved.

"The Gothowitz Deviation" -- Howard (Simon Helberg, second from left) and Raj (Kunal Nayyar, far left) visit a Goth nightclub to pick up women while Sheldon (Jim Parsons, second from right) attempts to build a better Penny (Kaley Cuoco, far right) using chocolate-based behavior modification, much to Leonard's (Johnny Galecki, center) on the THE BIG BANG THEORY, Monday, Oct. 5 (9:30-10:00 PM, ET/PT) on the CBS Television Network.  Photo: Cliff Lipson/CBS ©2009 CBS Broadcasting Inc. All Rights Reserved.

(l-r); Jim Parsons, Kaley Cuoco, and Johnny Galecki of The Big Bang Theory present at the 61st PRIMETIME EMMY(R) AWARDS, to be broadcast live from the Nokia Theatre in Los Angeles Sunday, Sept. 20 (8:00-11:00 PM, live ET/delayed PT) on the CBS Television Network.  Photo: Monty Brinton/CBS ©2009 CBS Broadcasting Inc. All Rights Reserved

"The Jiminy Conjecture" -- While Leonard (Johnny Galecki, center) and Penny struggle to recover from an awkward first hookup, Sheldon (Jim Parsons, right) and Howard (Simon Helberg, left) stake their best comic books on a bet to determine the species of a cricket, on THE BIG BANG THEORY, Monday, Sept. 28 (9:30-10:00 PM, ET/PT) on the CBS Television Network.  Photo: Sonja Flemming/CBS ©2009 CBS Broadcasting Inc. All Rights Reserved.

"The Electric Can Opener Fluctuation" The newly bearded gang, (Jim Parsons, Kunal Nayyar, Simon Helberg, and Johnny Galecki) finally returns home after three months at the North Pole, on the season three premiere episode of THE BIG BANG THEORY Monday, Sept. 21 (9:30-10:00 PM, ET/PT) on the CBS Television Network. Photo: Sonja Flemming/ CBS ©2009 CBS Broadcasting Inc. All Rights Reserved.

Multi-talented stand-up comedian, actor and author Lewis Black will guest star this fall in the second episode of THE BIG BANG THEORY, appearing as a brilliant but troubled professor of entomology who works at Caltech with the guys.

Lewis Black will be playing the role of Professor Crawley, a university entomologist whose life is falling apart - his department's being shut down because of budget cutbacks; his wife left him for someone who studies birds; and he's moving in with his daughter in Oxnard... not Oxnard on the beach, Oxnard by the onion fields. But, none of that is as aggravating as Sheldon (Jim Parsons), who keeps pestering him to settle a bet with Wolowitz (Simon Helberg) about a cricket - hardly a worthy question for a man with a dung beetle named after him.

An award-winning comedian, best-selling author, and popular actor, Black has been lauded with a Grammy Award, an American Comedy Award and an Emmy Award nomination for his stand-up work.  He is also a prolific and successful author: Two of his most recent critically acclaimed books were New York Times best sellers.  Black also continues to be a popular contributor to "The Daily Show with Jon Stewart," and recently appeared in the feature films "Man of the Year," "Unaccompanied Minors," "Accepted" and "Farce of the Penguins."