Playboy founder Hugh Hefner and his girlfriends Holly, Bridget and Kendra guest star on NBC's "Last Comic Standing" on Thursday, July 24 (8-10 p.m. ET) as the comics are surprised with a trip to the world-famous Playboy Mansion!

Only eight comics remain in NBC's "Last Comic Standing" competition: Sean Cullen (Toronto, Canada), Jeff Dye (Seattle, Washington), Ron G (Los Angeles, California), Adam Hunter (Hollywood, California), Marcus (West Jordan, Utah), Louis Ramey (Queens, NY), Iliza Shlesinger (Hollywood, California) and Jim Tavare (London, England).

The final eight are brought to the Playboy Mansion, but quickly realize they are there to work, not play, when host Bill Bellamy announces this week's challenge: creating a humorous bedtime story to tell Hugh Hefner's girlfriends, Holly, Bridget and Kendra, after he tucks them into bed. While the girls – wearing sexy lingerie and sitting in one large, heart-shaped bed – listen with rapt attention, the comics spin their funniest bedtime stories, each hoping to win immunity so they'll be safe from elimination.

All of the comics are surprised to learn that the challenge winner gains much more than immunity – they also win a coveted spot in the top five and America will vote to determine which of the remaining comedians will be joining the challenge winner in the final five. Who America chooses will be revealed in the next episode airing July 31 from the Paris Las Vegas.

"Last Comic Standing" is produced by Peter Engel Productions and Universal Media Studios. The executive producers are Peter Engel ("Saved By the Bell," "The Next Best Thing"), David Friedman (NBC's "Last Call with Carson Daly," "NBC's New Years Eve with Carson Daly") and Barry Katz ("Action," "Dane Cook's Tourgasm"). Javier Winnik (NBC's "The Singing Bee"), Page Hurwitz ("Last Comic Standing 4 & 5") and Noel Guerra (Bravo's "Project Runway") are co-executive producers.