Lewis Black booked for 'Big Bang' gig

LOS ANGELES, Aug. 17 (UPI) -- U.S. comedian, actor and author Lewis Black has signed on to be a guest star this fall in "The Big Bang Theory," CBS announced.

Black is slated to appear in the season's second episode as a "brilliant but troubled professor of entomology who works at Caltech with the guys," the network said.

The stand-up comedian and author is also 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."

"The Big Bang Theory," a sit-com starring Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg and Kunal Nayyar, is to begin its third season Sept. 21.