Amy Poehler sings Christmas carols with Billy and baffles New Yorkers; Paul Rudd joins in some antics.

Stephen Colbert plays "La La Land or Nicki Minaj;" contestant Elena is back to answer Twitter questions.

Talk-show host James Corden helps Billy appeal to the masses; Billy and actor Robin Lord Taylor ("Gotham") play an obstacle course called "Can You Separate the Art from the Artist?"; other games include "For a Dollar."

John Oliver joins Billy to the streets to find out what gay people think of him.

Billy is joined by Aziz Ansari to play the brand new game "Is This a Kanye West Quote or Not?"

Billy is joined by Keegan-Michael Key for the game "Name 10 Gay People"; aspiring actor Cameron plays "Walking Dead or Talking Dead?"; Key competes in a new obstacle course; other games include "For A Dollar" and "Give It Up For Kate Hudson."

Billy and Jon Hamm hit the streets; later, Billy plays "Immigrant or Real American" with Kevin the office manager.

Billy and Seth Meyers play "Would Lena Dunham F... That Cartoon Character"; Billy also plays "The Vaginal Four."

Billy and Neil Patrick Harris play a round of "How I Met Your Mother: Lightning Round" and "Racist or Vegetarian?"; Lindsay Lohan joins Billy for "How I Destroyed Your Mother."

Amy Poehler joins Billy for a round of "That's Not Pitbull, It's Amy Poehler!" and "Chipmunk or Huxtable"; Billy plays "Hope for Haiti or Jumanji."

Rashida Jones and Maya Rudolph join Billy for "Tyler Perry Movie Quote or Applebees"; Rashida Jones returns to play "Whistleblow That Jew."

Billy is joined by Juliana Margulies for a brand new game called "That's Not Sia, It's Juliana Margulies!"

Anna Kendrick helps Billy find love on the street, and Elena is the lifeline in a game of "Quizzed" in the Face.

Zachary Quinto and Billy head to the streets to play "It's Spock! Do You Care?" and "It Gets Better or Better Off Ted"; Julie Klausner joins Billy for a round of "Pig Fashion Show."

Will Ferrell joins Billy for "Would Drew Barrymore Like That?" and "Scream for an American Girl Doll"; Billy heads to Madison Square Park for a game of "Jennifer Who?"

Andy Cohen takes the streets of New York with Billy for a special game of "New Year's Eve or Deformed"; Billy also plays "Where in the World is Rianna's Rihgina" and a special edition of "Lesbian Lightning Round."

Billy introduces shocked New Yorkers to Jurassic World and Guardians of the Galaxy star, Chris Pratt; Billy finds out if Chris Pratt will be the next Indiana Jones and while playing "For A Dollar".

Billy quizzes "SNL" and "Horrible Bosses" star Jason Sudeikis on what Beyoncé is probably scared of; Jason helps Billy celebrate football season with a special bro-lightning round and a wicked tailgating party.

Billy is joined by Oscar winner Lupita Nyong'o for the brand new game Gay or Old?; everyone's favorite contestant Elena is back with a very patriotic Lightning Round.

Billy and Seth Rogen hit the streets for a new segment; Sarah and Billy play "What Does Michelle Rodriguez Bring to the Table."

"Where In The World Is John Mayer's Penis," "For A Dollar."

Based on Will Ferrell and Adam McKay's popular website, this half-hour sketch comedy series provides an anything-goes forum for young actors, comics and writers to continue developing their craft, and features special guest stars in roles that aim to push the envelope.

Comic Adam Conover, a cast member and writer at the popular comedy website CollegeHumor, brings his original online series to TV, expanding upon his efforts to poke fun at everyday things that people accept or assume without question. In the half-hour investigative comedy, Conover uses a not-quite-deadly combination of comedy, history and science to debunk widespread misconceptions about topics and ideas that are routinely taken for granted.

This hidden-camera series follows four lifelong friends -- Brian "Q" Quinn, James "Murr" Murray, Joe Gatto and Sal Vulcano -- who take dares to an outrageous level. Since they were young, the quartet have challenged one another to do ridiculous dares in public. On the show, to find out who is best under pressure, the guys compete in awkward and outrageous hidden-camera hijinks. At the end of each episode, the loser must perform what is deemed to be the most-mortifying challenge yet.

Off with the gloves and onto the stage go funny men and women armed with their best barbs and looking for a comedy knockout. TruTV's half-hour competition series features three comics in each episode battling in fast-paced challenges, with points awarded based on positive crowd reactions. One-upmanship is the goal as competitors attempt to land massive comedy blows and whip the crowd into a frenzy of raucous laughter. A final round decides the champion, and the least-funny participant is ultimately forced to face the crowd and apologize. Comic Damien Lemon hosts.

Michael Carbonaro is a multifaceted entertainer. He's an actor who has had recurring roles in various TV series, and he has also performed in his own comedy and magic show at clubs in New York and Los Angeles. He puts all of those talents to use -- and throws in a unique improvisation skill -- in "The Carbonaro Effect," an unscripted series in which he deceives, amazes and amuses an unsuspecting public. In each half-hour episode, Carbonaro performs baffling tricks on people in everyday situations, all caught on hidden camera. Whether the marks are alone or with friends, everyone is left stunned and delighted, even though they have no idea what they just experienced.

TV personality Kevin Pereira ("Attack of the Show") and comic Brooke Van Poppelen explore the world of "life hacks": procedures or actions that solve problems, simplify tasks or reduce frustrations. From opening a wine bottle with a shoe, eliminating pet hair on fabric with a squeegee and flip-flop, or using a sock to make a toilet seat more comfortable, the successful hacks are designed to be fun, inexpensive time-savers. Those that don't live up to the hype are exposed, and undercover hacks challenge members of the public to overcome pitfalls.

The passage of time often has a way of rewriting history. So does a few drinks. The half-hour series "Drunk History" -- based on the award-winning web series -- shows how by re-enacting famous events in history as told by inebriated storytellers. Each episode takes a tour of a U.S. city to explore stories and people from its rich past. Those stories are related in often-confusing ways by drunken narrators and performed by an all-star cast that includes Jack Black, Lisa Bonet, Connie Britton, Michael Cera, Bill Hader, Kevin Nealon, Bob Odenkirk and Winona Ryder. Figures such as Teddy Roosevelt, Patty Hearst, Billy the Kid, Al Capone, and Lewis and Clark are profiled, as are seminal moments like the Battle of the Alamo, Watergate, and the Scopes Monkey Trial.

"Friends of the People" is TruTV's first sketch-comedy series. It combines scripted elements with man-on-the-street features. The comics starring are Kevin Barnett, Jennifer Bartels, Jermaine Fowler, Lil Rel Howery, Josh Rabinowitz, and Kenny and Keith Lucas.