Biting social critic and comic Lewis Black will guest star on a new episode of "The Big Bang Theory" this fall.

CBS announced on Thursday (Aug. 13) that Black will appear on the season's second episode of "The Big Bang Theory" playing Professor Crawley, a brilliant entomologist who teaches at Cal Tech.

The network says that the character's life is falling apart, with the university closing down his department and his wife leaving him for an ornithologist (ouch). But as annoying as those things are, nothing in Professor Crawley's life is more annoying that Sheldon's (Jim Parson) dogged determination to ask a question about crickets.

"Big Bang Theory," recent winner of the Television Critics Association awards for Outstanding Achievement in Comedy and Outstanding Individual Achievement in Comedy (for Parsons) will return to CBS in its new 9:30 time slot on Monday, September 21. By our scientific calculations, that puts the Lewis Black episode on Monday, Sept. 28, but don't hold us to that.

Black is a Comedy Central regular, beloved for outraged appearances on "The Daily Show with Jon Stewart," as well as his own series, "Lewis Black's Root of All Evil," plus countless comedy specials. His acting credits include the features "Man of the Year," "Unaccompanied Minors" and "Accepted."