It’s official. The end of the world will have to wait until next year – or at least until May sweeps. CBS has given “Jericho” (7 p.m., CBS), the dark drama about a small Kansas town isolated by nuclear explosions, a full-season pickup.

On tonight’s “Jericho,” townspeople receive a recorded message from the Department of Homeland Security.

¢ Tonight marks the conclusion of the two-part season finale of “Project Runway” (9 p.m., Bravo), bringing to a close the best of the series’ three seasons.

Bravo will use this opportunity to introduce the second season of its other creative hothouse competition, “Top Chef” (10 p.m., Bravo). The juxtaposition is smart and a little unfair at the same time. “Top Chef” just isn’t as much fun or as stimulating as “Runway,” for the simple reason that clothes are fun to look at while food is best devoured. Staring at entrees gets a tad stale.

It doesn’t help that the would-be top chefs seem to have more swagger without being more clever or engaging. To be fair, chefs do their articulating in the kitchen. But I could do with a little less macho attitude. One contestant compares chefs to “rock stars without the budget.” Too many dishes will be served with a side order of testosterone. But what can you expect of a contest where competitors are asked to bring their own knives?

¢ The business documentary “Inside American Airlines: A Week in the Life” (8 p.m. and 11 p.m., CNBC) takes on the inner workings of the world’s biggest airline with thousands of employees responsible for thousands of daily passengers. Given this huge subject, the film is best when it’s focused on specifics. Just why are airline ticket prices so arbitrary? Why does the same flight cost one businessman $800 and another less than $100? Why is it so difficult to cash in frequent-flier miles? What do airlines do when the price of fuel doubles? Just who keeps track of the stuff in a passenger jet’s cargo hold?

¢ “Sci Fi Investigates” (9 p.m., Sci Fi) travels to the backwoods of Oregon to look into reports of Bigfoot sightings. The crew will be armed with night-vision goggles and plenty of raw liver to attract their mythical prey. They’ve also got their own professional cynic on board, Rob Mariano. Fans may remember him as “Boston Rob” of “Survivor” and “Amazing Race” fame.

Tonight’s other highlights

¢ The 2006 documentary “Once in a Lifetime” (7 p.m., ESPN) recalls the New York Cosmos, a professional soccer team that reflected the hedonism and excess of the 1970s.

¢ A critical decision may free a suspect on “Criminal Minds” (8 p.m., CBS).

¢ News about the hatch blast revealed on “Lost” (8 p.m., ABC).

¢ A provocative dancer dies mysteriously on “CSI: NY” (9 p.m., CBS).

¢ Scheduled on “Dateline” (9 p.m., NBC): A bitter divorce battle ends with a woman shot.

¢ Kathryn returns to work on “The Nine” (9 p.m., ABC).

¢ Oprah Winfrey, Kimberly Elise, Angela Bassett and Ruby Dee serve as presenters at the 2006 Black Movie Awards (9 p.m., TNT).