When Johnny Knoxville said he and his 'Jackass' cronies "have no idea what we're doing," Jon Stewart strongly disagreed. "Boy, this is going to sound crazy," said the 'Daily Show' (weeknights, 11PM ET on COM) host. "Anybody can whack someone in the nuts, but the way that you guys [do it] ... When you told me that they were screening this at MoMA, my first thought was, 'Yeah, I can see that.'"

Stewart went on to compare the slapstick comedians to Buster Keaton, the revolutionary comic actor and filmmaker of the silent-film era. "They put themselves through these trials and tribulations in a similar fashion." Knoxville compared his team to the not-so-revolutionary (being fictional and all) 'Tom & Jerry.'

• TLC has a Little People, Big World marathon all night.
• At 8, ABC has a Democratic Presidential Debate from Pennsylvania, followed by a new Men In Trees.
• CBS has a new Big Brother at 8, then new episodes of Criminal Minds and CSI: NY.
• NBC has a new Deal Or No Deal at 8.
• FOX has new episodes of 'Til Death, Back To You, and American Idol.
• There's a new America's Next Top Model at 8, then a new Pussycat Dolls.
• At 9, Sci-Fi has a new Ghost Hunters.
• Spike has a new UFC Unleashed at 9, followed by a new Ultimate Fighter.
• Also at 9: Travel Channel has two new episodes of John Ratzenberger's Made in America.
• At 9:30, HGTV has a new Design on a Dime.
• At 10, MTV has the season premiere of The Real World: Hollywood.
• TBS has two new episodes of Tyler Perry's House of Payne.
• Comedy Central has a new South Park at 10.
• Bravo has a new Top Chef at 10.
• TCM has Buster Keaton in The General at 10.

Check your local TV listings for more.

• At 7, USA has coverage of the U.S. Open.
• At 8, CBS has a new Big Brother.
• TLC has a new American Hot Rod at 8, then new episodes of American Chopper and Hard Shine.
• TCM has some Buster Keaton movies starting at 8, including Steamboat Bill, Jr., The General, and College.
• At 9, Sci-Fi has a new Who Wants To Be A Superhero?
• At 10, AMC has a new Mad Men.
• There's a new Ace of Cakes on Food Network at 10.
• MTV has the series premiere of Celebrity Rap Superstar at 10.
• Also at 10: Sundance has a new Live From Abbey Road, with guests Corrine Bailey Rae, Paul Simon, and Primal Scream.
• At 10:30, VH-1 has a new I Hate My 30s.

Check your local TV listings for more.