NCIS (8pm, CBS) - Ralph Waite returns as Gibbs' father, and he's behaving strangely. Meanwhile, the team looks into a murder which could be a possible hate crime. 

Sing Off (8pm, NBC) - Night two of a cappella competition, and two groups are eliminated.

Better Off Ted (9:30pm, ABC) - Rose has insider information about pending company layoffs, and Lem begins an affair with a company lawyer. 

Late Late Show with Craig Ferguson (12:37 am) - Ferguson celebrates his 100th episode with Kristin Bell, Maria Bello, and Jason Schwartzman. Jason Segel and The Broken West are the musical guests. 

Medium (9pm, CBS) - In an episode directed by David Arquette, Ariel (left) has a new boyfriend and Allison thinks he's a murderer. Meanwhile, Bridgette gets in trouble for posting troubling videos of a man on the internet. Kids today...

Monk (9pm, USA) - Monk must figure out who is trying to ruin Captain Stottlemeyer's wedding (to Virginia Madsen). Carol Kane also guest stars.

Mo'Nique Show (11 pm, BET) - A reunion of the cast of the CW sitcom "The Game."

Late Late Show with Craig Ferguson (1am, CBS) - Craig's guests tonight are crooner/actor Harry Connick Jr. and author Peter Sagal. I hope that's the same Peter Sagal as the Peter Sagal host (right) of NPR's "Wait Wait Don't Tell Me" show. And I hope he brings Carl Kassell.