SATURDAY

"NCIS" marathon (8 a.m., USA): Go ahead. Lose the day.

"Dirty Jobs" marathon (8 a.m., Discovery): Beginning with its 100th episode celebration.

"CSI: Miami" marathon (3 p.m., A&E): Think of it as a mini-vacation with offshore drug smuggling.

"I Get That a Lot" (7 p.m., WBBM-Channel 2): A rerun of the special in which celebrities pretend to have service jobs. Jessica Simpson at a computer repair store! Jeff Probst as a grocery cashier!

"The Magic of Audrey" (8 p.m., WTTW-Channel 11): Hepburn, that is. Required viewing.

"Killer Klowns From Outer Space" (9 p.m., WCIU-Channel 26): Need a reason to watch? Svengoolie tells me that Royal Dano, the old farmer who gets zapped by the klowns first, was the voice of Disney's animatronic Abraham Lincoln.

SUNDAY

"Tiffany Dome Restoration Project" (5:30 p.m., WTTW-Channel 11): That Chicago Cultural Center dome doesn't restore itself.

"Iron Chef America at the White House" (7 p.m., Food): Michelle Obama shows the contestants around the White House Garden.

"Frank the Entertainer ... In a Basement Affair" (7 p.m., VH1): The concept: A 32-year-old reality-show veteran - who lives in his parents' basement - looks for the lucky lady who will inspire him to move out. Root for Kari, who's from Elk Grove Village, and Chicagoan Christi.

"Giuliana & Bill" (8 p.m., Style): A new, fertility-oriented season for the Rancics.

"Secrets of Aspen" (9 p.m., VH1): A docu-soap about six single women who live in the ski town.

"Durham County" (8 p.m., Ion): The new, three-star season welcomes Michelle Forbes after her tour of erotic duty in "True Blood."