Amazing Race 20 (8pm, CBS) - In the two-hour finale, the final four teams race through Japan before traveling to Honolulu, where the winners claim the $1 million prize.
Between Two Ferns (8:30pm, Comedy Central) - Zach Galifianakis interviews Comedy Awards nominees in "Between Two Ferns: A Fairytale of New York," with appearances by Tina Fey, Jon Stewart and Sir Richard Branson.
Masterpiece Mystery: Sherlock (9pm, UNC-TV) - The second series of Masterpiece Mystery's excellent "Sherlock" opens with "A Scandal in Belgravia," in which idiosyncratic sleuth becomes a media sensation because of Watson's blog. Sherlock is asked by his brother to retrieve scandalous photos ofa British royal from a dominatrix. The case soon involves international terrorism, CIA agents, and a matter Holmes is decidedly unfamiliar with: love.
The Celebrity Apprentice (9pm, NBC) - The remaining contestants (that includes Clay Aiken) produce a four-page print ad for a digital touch-screen hair dryer. Returning apprentices John Rich and Marlee Matlin then interview the final four and Donald Trump fires two.
The Big C (9:30, Showtime) - Cathy goes all out to impress the birth parents of the child she hopes to adopt and Joy wants Paul to go before a live audience and relate his near-death experience.
Veep (10pm, HBO) - Selina celebrates 20 years in Washington but tries to keep a low profile after a newspaper article paints her as a diva.
GCB (10pm, ABC) - The first season concludes with Carlene taking the GCBs to a groundbreaking ceremony for the Condos for Christian Living, and Amanda's suspicions concerning Luke lead to a surprising discovery about Ripp.
Meet Mrs. Eastwood (10:30pm, E!) - A preview of the new reality show that chronicles the lives of Clint Eastwood's wife, Dina, and their two daughters Francesca and Morgan.