“Kehinde Wiley: An Economy of Grace,” on WETA at 9:30 p.m., profiles the famed New York-based artist, left, and his new series of portraits. (Jessica Chermayeff/Courtesy of Show of Force)

Simulcast on ABC, CBS, Fox, NBC and 26 cable networks, the Katie Couric-helmed “Stand Up to Cancer” (8 p.m.) raises money for cancer research with a star-packed hour of musical performances and celebrity appearances. The Who, Jennifer Hudson, Lupe Fiasco, Common, Ariana Grande and Dave Matthews are all scheduled to perform, and Reese Witherspoon, Jennifer Aniston, Jon Hamm, Eric Stonestreet and many more will be in attendance.

“Great Performances at the Met” (MPT at 8) presents Alexander Borodin’s “Prince Igor,” an opera about a 12th-century Russian ruler (played by Ildar Abdrazakov) who defends his country against invading forces.

FINALE WATCH: “Monumental Mysteries” (Travel at 9) tackles Teddy Roosevelt’s shady Moroccan mission and the last bare-knuckle boxing match in America, and channels AMC’s “Turn” while exploring the oddities found in the former home of America’s first spy ring during the Season 2 closer.

Two back-to-back episodes of “Four Weddings” (TLC at 9) introduce us to a bride who is using Friday the 13th as a theme, and a do-it-yourselfer who wants to make her own dress and wine for her castle nuptials.

“Kehinde Wiley: An Economy of Grace” (WETA at 9:30) profiles the famed New York-based visual artist and his new series of portraits that shows women clothed and posed to resemble 18th- and 19th-century society figures. Wiley goes on to enlist the help of Givenchy’s Riccardo Tisci to create gowns for his subjects, who include a prison guard, a teen mother and a Barbadian immigrant.

“Cocaine Cowboys Reloaded,” (Showtime at 10), an update of the jarring 2006 documentary “Cocaine Cowboys,” is packed with even more unseen footage and untold stories of how Miami became the drug, murder and cash capital of the United States in the 1980s.

Algernon nudges Thackery’s hand during surgery and enrages Eleanor on “The Knick” (Cinemax at 10).

Little League superstar and Sports Illustrated cover girl Mo’ne Davis is on “The Tonight Show Starring Jimmy Fallon” (NBC at 11:35) with actress Claire Danes and music from Fences featuring Macklemore.

Author and top-notch funny lady Tina Fey comes to the “Late Show With David Letterman” (CBS at 11:35), along with stand-up from Moody McCarthy and musical guest Kevin Drew.

Sports analyst Terry Bradshaw swings by “Jimmy Kimmel Live” (ABC at 11:35) with Mike Smith, John Paul Tremblay and Robb Wells of “Trailer Park Boys.” Plus, a musical performance from the Kooks.

Rachel Lubitz