Uncle Snoop (previously known as Snoop Doggy Dogg, Snoop Dogg and more recently Snoop Lion) hosts this year’s BET Hip Hop Awards (BET at 8 p.m.). Rick Ross, Meek Mill, 2 Chainz, Kendrick Lamar, Slaughterhouse and Lil’ Kim are scheduled to perform.
On a less hip-hoppy note, Gibbs and McGee are on the move in this week’s “NCIS” (CBS at 8). The duo travel to Afghanistan to investigate the murder of a woman who impersonated a soldier when they make a discovery that changes everything.
RETURNING SHOW: “The Biggest Loser” (NBC at 8) returns with 15 new contestants, including “American Idol” winner Ruben Studdard.
Jake seeks revenge on “Brooklyn Nine-Nine” (Fox at 8:30) after a rival detective steals his thunder on a murder case. Meanwhile, Terry tries to get recertified to carry a gun.
Liev Schreiber hosts and narrates “Superheroes: A Never-Ending Battle” (WETA at 8:30), a three-hour documentary that explores the dawn of the comic-book genre and traces the evolution of the characters and their cultural impact worldwide.
After Nick receives an inheritance from his late father, Jess attempts to apply the funds to Nick’s unpaid bills on “New Girl” (Fox at 9). Schmidt continues to search for the meaning of life and turns to a rabbi, played by Jon Lovitz, for advice.
After last week’s cliffhanger, “Supernatural” (CW at 9) returns with Dean taking drastic measures to find the demons left on earth. Elsewhere, Abaddon shockingly reappears with a plan to take over Hell.
Mindy brings a seemingly dull journalist as a date to Christina’s art show to spice things up a bit on “The Mindy Project” (Fox at 9:30). Plot twist: The art show includes nude photos of Christina’s ex-husband, Danny.
RETURNING SHOW: After charming audiences last year, “Gem Hunt” (Travel Channel at 10) is back with more high-stakes jewel drama. The series features veteran gem dealer Ron LeBlanc, jewelry expert Diana Robinson and geologist Bernie Gaboury as they search for the world’s most precious stones.
Action star and filmmaker Sylvester Stallone joins actress Anna Faris on “The Late Show With David Letterman” (CBS at 11:35), along with musical guests Deltron 3030.
Comedian Robin Williams, business magnate Mark Cuban and musical guest Gavin DeGraw are on “The Tonight Show With Jay Leno” (NBC at 11:35).
Actor Johnny Knoxville and dancer-turned-actress Julianne Hough are on “Jimmy Kimmel Live” (ABC at 11:35), which also features a performance by pop star Ariana Grande.