Tonight's must-see: "24"

ack tries to stay alive, with a little help from his friends, and Audrey gets some good news.

First is a two-hour profile of game shows. Then comes a portrait of Ken Jennings, the perpetual “Jeopardy” champ.

Danny and Monica team with the FBI to prep security to protect a priceless gem on display at the Montecito. Meanwhile, some of the team are wowed by the magic of illusionist Criss Angel (who plays himself). Robert Goulet and Lance Burton also make guest appearances.

Here’s another of Monk’s worst fears: Because of a strike, no one is picking up the garbage.