Not noted for their pipes (to say the least), stars of stage and screen nonetheless team with real-life crooners like Smokey Robinson to compete in Celebrity Duets (8 p.m.-10 p.m., WBFF, Channel 45).
NOVA -- 8 p.m.-9 p.m.,MPT, Channels 22, 67 / Pluto is dead to us. What about Mars? PBS.
LAW & ORDER: CRIMINAL INTENT -- 9 p.m.-10 p.m., WBAL, Channel 11 / Logan and Barek must contend with a foster mom whose kids are suspected of nasty crimes. NBC.
PRIMETIME: THE OUTSIDERS -- 10:01 p.m.-11 p.m., WMAR, Channel 2 / A look at the lives and beliefs of the Amish. ABC.
THE NEXT BEST THING -- 7 p.m.-9 p.m., Showtime / Best friends, a gay man and a straight woman, decide to have a child together. Seemed like a good idea at the time ...
ALIEN RESURRECTION -- 7:05 p.m.-9 p.m., Encore / For a dead person, Ripley puts up a pretty good fight, as her tormentors learn when they meet her clone.
CRANK: MADE IN AMERICA -- 8 p.m.-9 p.m., A&E; / Iowa families wrestle the demon of methamphetamine addiction.
STARSKY & HUTCH -- 8 p.m.-10 p.m., FX / Odd-couple cops take on a dope dealer in a '70s-flavored spoof.
THE THIRTEENTH YEAR -- 8 p.m.-10 p.m., Disney / At his birthday, a son begins to discover why he's always been such a good swimmer.
HIDALGO -- 8 p.m.-10:45 p.m., AMC / In Arabia, a Pony Express rider and his valiant horse take on thoroughbreds in a dangerous desert race.
FOR WHOM THE BELL TOLLS -- 8 p.m.-11 p.m., TCM / An action-hungry American finds his fill of it during the Spanish Civil War.
SERENITY -- 8 p.m.-10 p.m., Cinemax / The crew of a space freighter looks for work even as it ducks a totalitarian regime.
GOOD MORNING AMERICA -- Patti LaBelle and Mary Mary perform. (7 a.m., WMAR-2)
TODAY -- Ex-FEMA chief Michael Brown; first lady Laura Bush. (7 a.m., WBAL-11)
TONY DANZA -- Actor Ving Rhames. (1 p.m., WNUV-54)
TYRA BANKS -- Fashion designer Kimora Lee Simmons. (5 p.m., WUTB-24)
DAVID LETTERMAN -- Actor Zach Braff; the Roots perform. (11:35 p.m., WJZ-13)
JAY LENO -- Actor Orlando Bloom; comic Carrot Top; Starsailor performs. (11:35 p.m., WBAL-11)
From Web, wire reports