'GRIMM': A realization shakes Juliette and Nick's relationship to its core. (Scott Green/NBC)

FINALE WATCH: In its Season
5 closer, “Shark Tank” (ABC at 8 p.m.) features pitches ranging from reinvented cookware to an iPad app that measures foot sizes.

Television personality and Ozzy’s son, Jack Osbourne, comes to “Whose Line Is It Anyway?” (CW at 8), with guest comic Nyima Funk.

To celebrate her 50-plus years on television (and her last episode hosting “The View” airing at 11 a.m. on ABC), “Barbara Walters: Her Story” (ABC at 9) honors the acclaimed broadcast journalist with a two-hour special highlighting her best and most infamous moments in the business.

FINALE WATCH: “Grimm” (NBC at 9) closes Season 3 with Rosalee and Monroe’s big day; elsewhere, Juliette and Nick hit a rough patch when a secret comes to light.

FINALE WATCH: Gordon Ramsay is in Pennsylvania on the Season 6 finale of “Kitchen Nightmares” (Fox at 9), where he’s helping the owners of Bella Luna, an Italian restaurant, salvage their dream.

FINALE WATCH: Wade is caught off-guard when Zoe makes an unexpected gesture while AnnaBeth ponders her future with Davis on the third season finale of “Hart of Dixie” (CW at 9).

KG and Ringy are on the search for two campsites where British General Edward Braddock died and George Washington became a hero on “Diggers” (NatGeo at 9).

“American Masters: Plimpton! Starring George Plimpton as Himself”(WETA at 9:30) provides a personal history behind the writer, actor, editor, public intellectual, amateur sportsman and participatory journalist, with the help of interviews and previously unseen archival material.

A therapy session draws out Will’s visions of killing Hannibal on “Hannibal” (NBC at 10). Meanwhile, Jack brings in a surprise witness to help Will catch Hannibal once and for all.

Diverse family-style dinners are put to task on “Diners, Drive-Ins and Dives” (Food at 10), with mochiko chicken being compared to Greek dishes like grilled octopus and lamb tacos.

Actors Drew Barrymore and Giovanni Ribisi are on “The Tonight Show Starring Jimmy Fallon” (NBC at 11:35), with music from the band Elbow.

Actress Lea Michele and comedian Andy Kindler come to the “Late Show With David Letterman” (CBS at 11:35), along with a musical performance from Chromeo.

“Jimmy Kimmel Live” (ABC at 11:35) has comedian Adam Carolla and music from Royal Blood.

Rachel Lubitz