"NCIS" . . . 8:00 to 9:00 P.M. on CBS.  Billy Dee Williams guest stars as Gibbs' namesake.

"Dancing with the Stars" [Results Show] . . . 8:00 to 9:00 P.M. on ABC.  Music Guests:  Taylor Swift and Jason Mraz.

"The Voice" [Knockout Round] . . . 8:00 to 10:00 P.M. on NBC.

"Ellen DeGeneres:  The Mark Twain Prize" . . . 8:00 to 9:30 P.M. on PBS.  Jimmy Kimmel, Jane Lynch, John Krasinski, Kristin Chenoweth, and Lily Tomlin help honor Ellen DeGeneres as the 15th recipient of the award for American humor.

"Iconoclasts" . . . 8:00 to 8:30 P.M. on Sundance.  Model Christy Turlington Burns and fashion designer Tory Burch are guests.

"Happy Endings" . . . 9:00 to 9:30 P.M. on ABC.  Rob Corddry from "Childrens Hospital" and Rachael Harrisfrom "New Girl" guest star.

"19 Kids & Counting" [6th Season Finale] . . . 9:00 to 10:00 P.M. on TLC.

"Oprah: Where Are They Now?" . . . 10:00 to 11:00 P.M. on OWN.  Updates for pop trio stars Hanson, an 11-year-old who wanted a sex change, and a heroin addicted family.

"Total Blackout" [2nd Season Premiere] . . . 10:00 to 10:30 P.M. on Syfy.

"Flipping Out" [6th Season Finale] . . . 10:00 to 11:00 P.M. on Bravo.

"Viral Video Showdown" [Series Premiere] . . . 10:30 to 11:00 P.M. on Syfy.  Two teams go head-to-head against each other when they are tasked with creating a viral video in four days worthy of a $5,000 cash prize and bragging rights.

"Extreme Cheapskates" [1st Season Finale] . . . 10:30 to 11:00 P.M. on TLC.

"Watch What Happens:  Live" . . . 11:00 to 11:30 P.M. on Bravo.  "Glee" producer Ryan Murphy ("The New Normal") and Mark Consuelos ("American Horror Story") are guests.

"Hip Hop Squares" [Back-to-back Episodes] . . . 11:00 P.M. to Midnight on MTV2.  Panelists include Method Man, Amber Rose, Chiddy Bang, Nick Cannon, Angie Martinez, Jessica White, D.J. Khaled, and Ghostface Killah.