nova_memoryhackersDoes anybody remember what’s on TV Wednesday nights? Well the whole notion of memory is challenged on a fascinating new “Nova” (PBS, 9 p.m., check local listings) that includes some of those people who remember details of every day they’ve been alive to people whose memories can be easily manipulated to others whose painful memories or memories of fears can be erased (and yes they bring up “Eternal Sunshine of the Spotless Mind.”

There’s been no shortage of comedic material from this year’s presidential race, and here to jump on it is everyone’s favorite insult comic dog in “Triumph’s Election Special 2016” (Hulu, streaming) in which the rubber puppet pooh-poohs politics through razzing a Jeb Bush rally, riffing off of John Kasich’s debut board, selling fake Donald Trump merchandise and sending out Tim Meadows as Ben Carson to fool voters. Also, there’s a panel discussion with experts in the field, Alan Dershowitz and Sanjaya.

The first half of the Top 24 perform on “American Idol” (Fox, 8 p.m.).

A year in the life of a moose is chronicled on a new “Nature” (PBS, 8 p.m., check local listings).

Adam wants to go see “Porky’s” on a new episode of “The Goldbergs” (ABC, 8:30 p.m.).

Claire tries to declutter on “Modern Family” (ABC, 9 p.m.).

Already a part of one network prime time show (“You, Me and the Apocalypse”), Jenna Fischer joins “The Mysteries of Laura” (NBC, 8 p.m.) as a recurring character. Valentine’s Day is being marked on the episode, as it is on “Supernatural” (The CW, 9 p.m.).

Assigned dishes celebrate the Fourth of July, Cinco de Mayo and the Mardi Gras on “Hell’s Kitchen” (Fox, 9 p.m.).

Parasitic aliens that burst out of their human hosts is the requirement this week on “Face Off” (Syfy, 9 p.m.).

The NFL’s Odell Beckham Jr., is special guest on a new “Code Black” (CBS, 10 p.m.).

A crossover event involves Mariska Hargitay and Ice-T on “Law and Order: Special Victims Unit” (NBC, 9 p.m.) and on “Chicago P.D.” (NBC, 10 p.m.).

“Wild Things with Dominic Monaghan” (Travel, 10 p.m.) goes to Vietnam in search of a giant water bug.

Lena Duham guest stars on a new “Billy on the Street” (truTV, 11 p.m.).

An author is a handful on “Younger” (TV Land, 10 p.m.).

More racial tension rocks “American Crime” (ABC, 10 p.m.).

Josh tries to prove himself to Rosa on “Man Seeking Woman” (FXX, 10:30 p.m.).

“Teachers” (TV Land, 10:30 p.m.) fail to keep their private lives outside of the classroom.

Mike and Harvey can’t agree on trial strategy on a new “Suits” (USA< 10 p.m.).

You might think “Preachers of Atlanta” (Oxygen, 10 p.m.) is the last show to use paternity tests. But you’d be wrong.

Tori Spelling, Ne-Yo, T-Pain, King Bach and Sonja Morgan are guests on “Cocktails with Khloe” (FYI, 10 p.m.).

Turner Classic Movies’ 31 Days of Oscars continues with “The Great Escape” (8 p.m.), “Bullitt” (11 p.m.), “Papillion” (1 a.m.), “This Land is Mine” (3:45 a.m.) and “Step Lively” (5:30 a.m.).

Men’s college hoops include Tulane at East Carolina (ESPNews, 6:15 p.m.), Butler at Seton Hall (Fox Sports 1, 6:30 p.m.), LSU at South Carolina (ESPN2, 7 p.m.), Memphis at Houston (ESPNU, 7 p.m.), Providence at Marquette (CBS Sports, 7 p.m.), Washington at Utah (ESPN2, 9 p.m.), Iowa State at Texas Tech (ESPNU, 9 p.m.), Tulsa at SMU (CBS Sports, 9 p.m.) and San Diego State at Fresno State (CBS Sports, 11 p.m.).

NBA action has Lakers at Cleveland (ESPN, 8 p.m.) and Houston at Portland (ESPN, 10:30 p.m.).

Hockey has Rangers at Pittsburgh (NBC Sports, 8 p.m.).

Daytime Talk

Kelly & Michael: Ben Stiller, Bob Odenkirk. The View: Sen. Bernie Sanders. The Talk: Alyssa Milano, Dean Sherbet. Ellen DeGeneres: Ryan Seacrest, Demi Lovato. Wendy Williams: Vanna White, Jacques Torres. The Real: Joe Morton. Meredith: Vieira: Debi Mazar.

Late Talk

Stephen Colbert: Ben Stiller, Sen. Bernie Sanders, Tao: Seventeen Samurai. Jimmy Kimmel: Sacha Baron Cohen, Zendaya, Mana. Jimmy Fallon: Penelope Cruz, Magic Johnson, Halsey. Seth Meyers: Ryan Reynolds, Katie Lowes, Wynona & the Big Noise, Jaleel Bunton. James Corden: LL Cool J, Viola Davis, Malin Ackermann. Carson Daly: Mami Billig, Miami Horror, Jonathan Krisel. Tavis Smiley: Seema Mehta, Pilar Marrero, Tom McCarthy. Trevor Noah: Olivia Wilde. Larry Wilmore: T.J. Miller. Conan O’Brien: Chelsea Handler, Jason Mantzoukas, Lianne La Havas.