Watch "Harry Potter" star Daniel Radcliffe try to name every single NFL quarterback!

Anna Kendrick reveals that underneath her sweet exterior she has a dark side that involves running a prostitution ring and drowning kittens.

Watch "Avengers" star Tom Hiddleston reveal how he's the world's lamest prankster.

The "Wilfred" and "Lord of the Rings" star spends the day with Josh at the office and wreaks total havoc.

"True Blood" star Joe Manganiello is sick of hearing his name mispronounced and now he's doing something about it.

Catch all of Shailene Woodley's essential tips to hugging, with help from Ansel Elgort.

"Man of Steel" star Michael Shannon gets about as adorable as he possibly can.

Enter into Mark Wahlberg's man cave, where full frontal nudity could happen at any moment.

"Guardians of the Galaxy" star Chris Pratt teaches you how to take the best selfie possible.

The director gives advice on directing, writer's block, movie recommendations, and fetishes.

Key, Peele and Josh Horowitz discuss the subtle art that is humor.

Emma Stone lets us in on some of her preferences and thoughts, like how she thinks "Game of Thrones" is a joke show.

When "After Hours" host Josh Horowitz accidentally kills Bill Hader, his ghost is out for vengeance.

Joshua Jackson, star of "The Affair," clearly has some issues with jealousy.

Are you sick and tired of wearing pants? Then you're gonna love Kellan Lutz's new fashion line.

Daniel Radcliffe, star of Harry Potter and Horns, tries to sell Josh various costumes in his own Halloween shop.

Ethan Hawke and Josh Horowitz find out that sometimes love is all about timing.

See what crazy antics occur when Mark Wahlberg & Will Ferrell, from "The Other Guys," drop in for MTV's long-running weapons show.

It's the last available room in the entire hotel, and Josh has to share it with Sam Rockwell and a very special guest.

Andy Samberg, Akiva Schaffer and Jorma Taccone of Lonely Island explores the sonic space with MTV News' Josh Horowitz in this week's episode of After Hours.

When your email freezes up, you need a man with a very particular set of skills.

Jeff Goldblum is really, really dedicated to his new side business.

Channing Tatum and Jamie Foxx answer the tough questions with Josh on The Yes/No Show.

Max & Nev help Josh Horowitz meet his online soul mate: Rebel Wilson.

Ryan Gosling re-enacts the infamous internet meme.

Josh Horowitz, of MTV News, gets intimate with two of Hollywood's best comedians, Jim Carrey and Steve Carell.

Watch as Benedict Cumberbatch impersonates Taylor Swift, Matthew McConaughey, Tom Hiddleston and many more!

Tom Hiddleston and MTV News’ Josh Horowitz cuddle up and throw a slumber party – but a pillow fight quickly develops into a bar fight.

James McAvoy and Jessica Chastain invite Josh Horowitz to be best friends with them... but first he needs to play a game of Truth or Dare.

Dwayne Johnson and Billy Bob Thornton give sound advice for cooking your turkey on Thanksgiving.

Elizabeth Banks explains why Chris Colfer, Chloë Grace Moretz, ?uestlove, Max Greenfield, Amber Rose, Vinny Guadagnino, Clark Gregg, Robin Thicke, and Jean-Claude Van Damme did not make the final cut of The Hunger Games franchise.

Josh Horowitz sits down with Benedict Cumberbatch, John Malkovich, Tom McGrath, Ken Jeong, and Pitbull to talk about penguins and their worth in life.

Simon Pegg and Josh Horowitz debate the rights and wrongs of Star Wars: Episode 1 - The Phantom Menace.

Kate Hudson sings Barbra Streisand while Zach Braff explains “schmearing” as we find out who’s the better Jew.

Mark Wahlberg, Emile Hirsch and Taylor Kitsch spread holiday cheer (and booze) with Josh Horowitz on this After Hours special, just in time for Christmas.

Ariana Grande or a Grande Eggnog latte? Kim Kardashian or Iggy Azalea? Find out what Anna Kendrick picks when she plays ‘This or That’ with Josh Horowitz!

See what terrors are endured when a routine escalator ride with Penthouse Pet Ryan Keely goes horribly awry in the new trailer for M. Night Shyamalan’s "Escalation," exclusively on MTV After Hours with Josh Horowitz.

Kristen Stewart, Chris Hemsworth, Charlize Theron, and Sam Claflin explore the sultry side of literature on “Erotica.” Watch as they do their best to keep a straight face while reading Fifty Shades of Grey on this episode of MTV After Hours with Josh Horowitz.

We put Scarlett Johansson (who is Jewish) and Matt Damon (who isn’t) to the ultimate test of Judaic knowledge on this episode of After Hours with Josh Horowitz.

Ben Stiller, Owen Wilson, Rebel Wilson and Ricky Gervais have to make some difficult choices when they play an interesting game of 'F--k, Marry, Kill.'