Fan of Fox News host Glenn Beck: look away! On last night's episode of "The Daily Show," Jon Stewart did an extended (nay: epic) impression that was...not flattering. See it above, and hit "continue reading" for the rest of last night's late-night highlights.

If you celebrated St. Patrick's Day properly yesterday, you're still feeling it today -- and last night's special St. Patrick's Day song, performed last night by Jimmy Fallon (above), may be just the thing to keep you from hitting the hair of the dog. The rest of last night's late-night highlights are after the jump.

You might date the end of the Late Night Wars from Conan's last episode of "The Tonight Show"...or Jay Leno's second first episode of "The Tonight Show." You may also find yourself musing on the question of who won or lost said Late Night Wars as you watch the clip above, in which Leno's time-slot rivals Jimmy Kimmel and David Letterman discuss their shared antagonist on last night's episode of "The Late Show." The rest of last night's late-night highlights are after the jump.

It doesn't take a news junkie to notice that there are quite a few members of the Senate and House of Representatives having a tough time of it in the media lately. But in case you somehow HAVE missed it, "The Daily Show" covered the latest offenders last night, in its wrap-up of Crumbums and Fatcats, above. The rest of last night's late-night highlights are after the jump.

People probably have lots of reasons not to visit Florida. And when I say "people," I mean "people other than me," because hello, Disney World. But on last night's episode of "The Colbert Report," Stephen addressed the latest reason to avoid the state: monkey on the lam! See it above; the rest of last night's late-night highlights are after the jump.

There's no excuse for you not to know about Jerry Seinfeld's new unscripted TV show, "The Marriage Ref": he talked it up last week on "The Late Show," he was on "Live with Regis and Kelly" this morning, and last night, he stopped by "The Daily Show." See the interview above; the rest of last night's late-night highlights are after the jump.

David Letterman is a man of many skills, including tremendous grocery-bagging speed. Or so he thinks. On last night's "Late Show," he faced off against the nation's defending grocery-bagging champion, and nearly tied...with only minor cheating. See it above, and enjoy the rest of last night's late-night highlights after the jump.

These days, Chris Parnell should be best known for voicing Cyril on "Archer." (He probably is best known for voicing the Helping Hand in the Hamburger Helper ads). But just a few short years ago, he made viral-video history opposite Andy Samberg in the deathless "SNL" Digital Short "Lazy Sunday" -- and last night on "Late Night with Jimmy Fallon," he revisited past glory by performing the song live. Watch it above, and hit "continue reading" for the rest of last night's late-night highlights.

"The Tonight Show" had an interview last night with a guy who doesn't know how to let go of the career he loves. You see, this is a guy who's walked away from his passion, only to return to it a few months later. People say he's washed up, but he defies the odds and keeps trotting out to go to work whenever he's needed by his employers. Some people love the guy, others loathe him, but one thing's for sure: Matthew McConaughey was really pumped to be sitting next to Brett Favre during the above interview.

Oh, you thought I was talking about Jay Leno?

Chatroulette is a new(ish) website that connects you with other internet users who have webcams, and allows you to talk to each other. But is this an experience you would actually enjoy? The news media has had its chance to investigate; above, "The Daily Show" takes its turn. After the jump: the rest of last night's late-night highlights.