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.

"Late Night with Jimmy Fallon" has done it again, you guys! Another installment of my favorite segment, Video Vision! In this latest outing, Video Vision takes on the extremely touchy and important topic of sexual harassment. See it above; the rest of last night's late-night highlights are after the jump.

Former Alaska Governor Sarah Palin is currently employed only part-time, as an occasional contributor on Fox News. So maybe this is the perfect time for her to explore another career -- standup comic, perhaps? See her open last night's episode of "The Tonight Show," and then hit continue reading for the rest of last night's late-night highlights.

The relocation of NBC's "Today" show to Vancouver for the Olympics has posed some interesting opportunities for the morning show's promotional segments. Unfortunately, one of those opportunities is to take advantage of Whistler Blackcomb's beautiful scenery, and as we've learned over the past couple weeks, Vancouver's weather patterns are a fickle mistress.

So with this in mind, poor Jimmy Fallon. Fallon went on "Today" to promote his show's upcoming one-year anniversary episode (on March 1), and the producers planned for Meredith Vieira to interview him in one of the ski resort's tram cars. You know, one of the gondola-things that takes you up the mountain. Keep in mind that it was about 5 AM Vancouver time when they were shooting this segment. And the weather was a foggy, rainy mess, as is Vancouver's custom.

The result? The interview looked like it was taking place in someone's poorly lit basement. Fallon's trademark chipperness kept it from being a total disaster, which is especially impressive, all things considered. Thank God for that "schnapps bar" (mentioned above), eh? (Get it? Eh? Canada? Never mind.)

If you're in a relationship, you can consider this a Public Service Announcement: Sunday is Valentine's Day. But before you run out to buy a panic gift, watch the clip above, in which Jimmy Fallon serenades a special class of lady: the cougar. Then click "continue reading" for the rest of last night's late-night highlights.