Series
NCIS: : Gibbs (Mark Harmon) confronts demons from his past when he finds a cryptic message waiting for him at a crime scene. (8 p.m., WJZ-Channel 13)
The Biggest Loser: : A balancing competition will bring the winner a 24-hour visit from a loved one. (8 p.m., WBAL-Channel 11)
90210: : Naomi (AnnaLynne McCord) is smitten with a bartender who's surrounded by mystery. (8 p.m., WNUV-Channel 54)
American Idol: : The Hollywood round continues. (8 p.m., WBFF-Channel 45)
How the Earth Was Made: : The new series premieres with a trip along the San Andreas Fault. (9 p.m., History)
Specials
Westminster Kennel Club Dog Show: : The closing night of the annual event, from Madison Square Garden. (8 p.m. and 10 p.m., USA)
Late-Night Guests
Tonight Show with Jay Leno: : TV show host Bill Maher; actress Viola Davis; Raphael Saadiq performs. (11:35 p.m., WBAL-Channel 11)
Late Show with David Letterman: : Capt. Chesley Sullenberger and the crew of U.S. Airways Flight 1549 talk about safely landing their plane in the Hudson River. (11:35 p.m., WJZ-Channel 13)
Los Angeles Times
z on tv
Look for David Zurawik's Z on TV column in the You & Arts & Entertainment section on Sunday. Read his daily blog at baltimoresun.com/zontv