The weeklong presentation of Richard Wagner’s “Ring” cycle concludes with “Gotterdammerung” on “Great Performances at the Met” (PBS, 9 p.m., check local listings). It’s the most theatrically stirring of the four operas in Robert Lepage’s production at the Met. Conducted by Fabio Luisi, it stars Deborah Voight as Brunnhilde and Jay Hunter Morris as Siegfried.
“Shark Tank” (ABC, 8 p.m.) starts its fourth season, which will involve more celebrities in its pitches. But not tonight, when regular people offer ideas about body massage and bedbug innovation.
One of the sharks, Barbara Corcoran, also pops up on the season premiere of “What Would You Do?” (ABC, 9 p.m.), reacting to a set-up about a job interviewer who won’t hire women but will hit on them.
It’s not enough that he has such sitcoms as “House of Payne” (TBS, 8 p.m.) or “Better or Worse” (TBS, 9 p.m.). Tyler Perry also directs the coeds on “America’s Next Top Model” (The CW, 8 p.m.).
New York Fashion Week concludes with “The Ninth Annual Style Awards” (Style, 8 p.m.).
The season premiere of “20/20” (ABC, 10 p.m.) looks at neighbors in Texas who don’t get along.
Wondering how a new episode of “Touch” (Fox, 8 p.m.) somehow surfaces a week before the new season starts. One of that show’s unexplained phenomena no doubt.
Scheduled guests on “Real Time with Bill Maher” (HBO, 10 p.m.) include John Legend, Bob Costas, John Feehery, Chris Hayes and Zanny Minton-Beddoes.
Think it’s been cooling down this week? It’s starting to snow on “North Woods Law” (Animal, 8 p.m.).
Thirty-two welterweights scramble to win 16 spots in the teams of Shane Carwin and Toy “Big Country” Nelson in the two hour second season premiere of “The Ultimate Fighter Fridays” (FX, 9 p.m.).
It’s also the season premiere for the supernatural sleuths of “Ghost Adventures” (Travel, 9 p.m.).
The first season of “I Found the Gown” (TLC, 10 p.m.) ends for now its frantic search at discount Boston wedding shops.
Season two ends for “Lost Girl” (Syfy, 10 p.m.), one of the few scripted shows on TV I have never seen.
Not about tonight’s Springsteen show at Nationals Park: “Boss” (Starz, 9 p.m.).
When it comes to playing Queen Elizabeth I, it’s all about the hairline. A survey of queens tonight includes Bette Davis in both “The Virgin Queen” (TCM, 8 p.m.) and “The Private Lives of Elizabeth and Essex” (TCM, midnight) and Jean Simmons in “Young Bess” (TCM, 10 p.m.).
It’s always fun to watch Steven Spielberg’s “Close Encounters of the Third Kind” (AMC, 8 p.m.).
Denzel Washington abounds in “John Q” (BET, 8 p.m.), “Remember the Titans” (ABC Family, 6 and 8:30 p.m.).and “The Pelican Brief” (TV Guide Network, 10 p.m.).
Gene Hackman is in “How to Rob a Bank” (TMC, 8 p.m.) and “The Replacements” (TBS, 10 p.m.).
In college football, it’s Washington State at UNLV (ESPN, 9 p.m.).
Kelly & Michael: Tyra Banks, Theresa Caputo. Katie Couric: Jennifer Lopez. The View: Richard Gere, Barbara Corcoran, Lauren Miller, Ari Graynor, Chris Cuomo. The Talk: Dr. Sanjay Gupta, Chi Lan Lieu, Brooke Shields. Ellen DeGeneres: Justin Bieber, Phillip Phillips.
David Letterman: Howard Stern, Jason Aldean (rerun). Jay Leno: Adam Levine, Magic Johnson. Jimmy Kimmel: Matt Stone & Trey Parker, Adam Scott, Everclear (rerun). Jimmy Fallon: Hugh Laurie, J.J. Abrams, Grizzly Bear. Craig Ferguson: Tom Lennon, Brit Marling. Tavis Smiley: Kyra Sedgwick. Carson Daly: Judah Friedlander, Dr. Dog (rerun). Chelsea Handler: Rebel Wilson, Brad Wollack, Kerri Kenney-Silver, Josh Wolf (rerun).