(All times Eastern)
FINALE WATCH: With the competition whittled to four teams (blind-daters Hayley and Blair, Jenny and Jelani, Laura and Tyler, and couple Rochelle and Mike), the season 26 finale of "The Amazing Race" (CBS at 8 p.m.) takes the racers to Dallas, where they visit a cattle ranch and rappel from the top of Reunion Tower before ending up in AT&T Stadium, home of the Dallas Cowboys.
The documentary "21 Years: Richard Linklater" (Showtime at 8) shines a light on the remarkable career and life of the filmmaker behind "Boyhood" and "Before Sunset," with animated sequences and interviews with stars such as Ethan Hawke and Billy Bob Thornton.
FINALE WATCH: "Grimm" (NBC at 8) closes its fourth season with Nick on a road to revenge after a horrifying discovery leaves him stunned.
FINALE WATCH: For its sixth-season finale, "Shark Tank" (ABC at 8) features pitches from a cat lover, who wants to open a cafe where patrons can enjoy the company of rescue cats, and a toy designer.
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Country superstars take the stage together as singing duos on the concert special "ACM Presents: Superstar Duets" (CBS at 9). Scheduled performers include Luke Bryan, Kenny Chesney, Miranda Lambert and Patty Loveless.
Host Don Wildman looks at how a popular beverage transformed into one of America's most explosive candies and at a pinball machine that represents the gutsy player who saved it from obscurity on "Mysteries at the Museum" (Travel at 9).
"American Masters: American Ballet Theatre" (WETA at 9:30) celebrates the esteemed institution, which was founded in 1940, with archive rehearsal footage, virtuoso performances and remarks from key figures such as Alicia Alonso, Julie Kent and Kevin McKenzie.
"Real Time With Bill Maher" (HBO at 10) hosts activist Ayaan Hirsi Ali, rapper Killer Mike, Demos President Heather McGhee, political scientist Charles Murray and filmmaker John Waters.
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The documentary "The Buddha of the Piano: Leopold Godowsky" (MPT at 10:30) zeroes in on the famed pianist through performances of his classic arrangements and original compositions by Antonio Iturrioz.
Actors Queen Latifah and Sam Rockwell come to "The Tonight Show Starring Jimmy Fallon" (NBC at 11:35), with a performance from the Broadway cast of "Something Rotten!"
With their feud far behind them, Oprah Winfrey makes her last "Late Show With David Letterman" (CBS at 11:35) appearance, with comedian Norm Macdonald.
Actor Paul Giamatti is on "Jimmy Kimmel Live" (ABC at 11:35), with "Science Bob" Pflugfelder.
— Rachel LubitzncG1vNJzZmivp6x7uK3SoaCnn6Sku7G70q1lnKedZLKvwMSrq5qhnqKyr8COra1orKZiuaq%2F06KloKtdm7%2BqsMCyZKaZqWJ%2BdnmRaWhuZ2JlfnZ7j25mamxfaYFxgZNrbppllm6EenmQapxtZWllgHF5wW1ubGqTlrKnsZdqlqysn6fGb7TTpqM%3D