TV Highlights: Dan Aykroyd on 'The Defenders'; Dina Lohan on '20/20'; 'Gold Rush: Alaska' finale
Rosie O'Donnell takes quite an ancestral journey on "Who Do You Think You Are" (NBC at 8) as she travels from Jersey City to Ireland to uncover clues about her mother, who died when O'Donnell was young.
Chef Gordon Ramsay also heads to New Jersey, but his goal is to try to keep a restaurant called Grasshopper Also from permanently shutting down, on "Kitchen Nightmares" (Fox at 8).
A mom is stressed to her limit with her four young children while her husband is stationed overseas for a year in Afghanistan - like a superhero, "Supernanny" (ABC at 8) swoops in to help with the overwhelming situation.
Dan Aykroyd ends his two-episode sting on his buddy Jim Belushi's show, "The Defenders," (CBS at 8) as he plays a judge who turns to Nick (Belushi) for help with drug charges.
"The Injustice Files" (Investigation Discovery at 9), a new docu-series looking at crimes from the civil rights era, is previewed by Hank Stuever on Page C1.
A woman grieving her husband get a visit from the team on "Fringe" (Fox at 9) when a series of strange events happens; meanwhile, Peter and Olivia try to repair their relationship.
Some brides buy a dress a year before the wedding; others might wait six months. But the staffers on "Say Yes to the Dress" (TLC at 9) race to help an eloping bride-to-be who has 22 hours before she walks down the aisle.
The "Real Time With Bill Maher" (HBO at 10) roundtable features TV personality Michelle Caruso-Cabrera, editor John Heilemann and talk-show host Tavis Smiley; filmmaker Kevin Smith also stops by for an interview.
On "20/20" (ABC at 10), Chris Cuomo revisits the bizarre NASA love triangle from 2007, in which Lisa Nowak drove 900 miles to confront her ex's new girlfriend in an Orlando parking lot. Later, Cuomo also chats with Dina Lohan about her daughter Lindsay and her recent legal trouble.
The season finale of "Gold Rush: Alaska" (Discovery at 10) finds the team in the middle of some tough Alaskan winter weather but nonetheless going deeper than ever to try to find the gold.
Actor David Spade visits "Late Show With David Letterman" (CBS at 11:35), along with comedian Andy Kindler, and musical guests Lukas Nelson and Promise of the Real.
"The Tonight Show With Jay Leno" (NBC at 11:35) hosts actor Mark Harmon, basketball player Dwight Howard and a performance by Thirty Seconds to Mars.
- Emily Yahr