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KUED-Ch. 7 takes a look at a Utah institution in "Lagoon: Rock and Rollercoasters" (7 p.m., Ch. 7).

It's a bit heavy on talking heads, but this relatively brief (about 39 minutes) documentary about the Farmington amusement park is filled with some nice photos, video, some interesting history and some great memories.

It's fun.

Elsewhere on TV …

• Stanley Cup Finals (6 p.m., NBCSN): Game 3 — Pittsburgh Penguins at Nashville Predators

• "The Bachelorette" (7 p.m., ABC/Ch. 4): Rachel takes six men on a group date to "Ellen''; eight bachelors mud wrestle — and they will ignore the news that one of the remaining bachelors, Lee Garrett, has a history of racist, sexist and homophobic tweets.

• "Gotham" (7 and 8 p.m., Fox/Ch. 13): The search for an antidote to the deadly virus continues; Fish Mooney, The Riddler and Penguin make plans of their own; Bruce meets Ra's Al Ghul and completes his last task. (Season finale)

• "Whose Line Is it Anyway?" (8 p.m., CW/Ch. 30): The Bella twins and Jeff Davis are the guests.

• "American Dad" (8 p.m. TBS): Hayley and Jeff are suspicious of Roger when he organizes a ``Burning Man'' reenactment for their anniversary.

• "Angie Tribeca" (8:30 p.m., TBS): An outbreak of a lethal virus threatens to liquefy everyone in Los Angeles.

• "Still Star-Crossed" (9 p.m., A&E): Rosaline and Benvolio follow Prince Escalus' decree to marry each other in an effort to restore peace.

• "If You're Not in the Obit, Eat Breakfast" (9 p.m., HBO): Carl Reiner tracks down several celebrated nonagenarians to show how the twilight years can be the happiest and most rewarding.

• "Better Call Saul" (11 p.m., AMC): Jimmy takes desperate measures; Mike makees an alliance; Kim stands up to Hamlin.

• "Daytime Divas" (11 p.m., VH1): This campy drama is set behind the scenes of a daytime talk show. The all-female panel make like friends on the air, and stab each other in the back behind the scenes. If that seems based on "The View," well, it's based on a novel titled "Satan's Sisters" by longtime "View" panelist Star Jones. Vanessa Williams, Tichina Arnold, Chloe Bridges, Camille Guaty and Fiona Gubelman star.