Highlights

Highlights

Tonight, CNN, Fox News Channel and MSNBC report the results of the Kentucky and Oregon primaries.

The two-hour "Dancing With the Stars" (Channel 7 at 9) finale will reveal this season's third-place couple at the top of the show before the final two compete for the mirror-ball trophy.

On the eve of tomorrow's finale, the Davids give it their best shot on " American Idol" (Channel 5 at 8).

One of the good guys (or gals) is slain, and the team hunts for the killer in the two-hour finale of "NCIS" (Channel 9 at 8).

On the second-season finale of "Shark" (Channel 9 at 10), Sebastian tracks an escaped convict who has vowed to take revenge on him.

Rebellious demons, afraid that Sam poses a greater threat to them than the Devil himself, set a trap for him in the finale of "Reaper" (Channel 50 at 9).

The Britcom "Not Going Out" (BBC America at 8:40), starring Lee Mack and Tim Vine of "The Sketch Show," centers on Kate (Megan Dodds), a clean-living Californian; Tim (Vine), Kate's ex; and Lee (Mack), a slacker friend of Tim's who moves in with Kate. In tonight's U.S. premiere, Kate helps Lee find a career by suggesting clown school.

"Left for Dead: Miracle on Everest" (National Geographic at 9) tells the survival story of mountaineer Lincoln Hall, who reached the summit of Mount Everest only to collapse from cerebral edema and severe frostbite.

As the end of king crab season closes in, jellyfish in the pots sting in more ways than one on "Deadliest Catch" (Discovery at 9).

On "Work Out" (Bravo at 10), two trainers get cozy over drinks at a hotel bar; Gregg visits Peeler and finds he has hit new lows; JD visits a client at her daughter's rehabilitation center; and Jesse runs a boot camp for Playboy bunnies.

In "Lord of the Ants," "Nova" (Channels 22 and 26 at 8) profiles E.O. Wilson, the ant scientist credited with popularizing the field of sociobiology.

"Independent Lens" (Channel 26 at 11), hosted by Terrence Howard, presents "Dream in Doubt," which explores post-9/11 America from the perspectives of Phoenix's Sikh American community and Rana Singh Sodhi, whose brother became a post-9/11 hate-crime fatality.

Harrison Ford, Ali Lohan and singer Leona Lewis appear on "Late Show With David Letterman" (Channel 9, 11:35).

Sylvester Stallone; Irma and Ray Ziff, who have been married 75 years; and musician Jason Mraz are on "The Tonight Show With Jay Leno" (Channel 4, 11:35).

The winner of "Dancing With the Stars" visits "Jimmy Kimmel Live!" (Channel 7, 12:05).

-- Christian Hettinger