Kate Erbland

The Tonight Show host Jimmy Fallon might be prone to brief spats of name-dropping – hey, the guy knows a lot of people! – but on last night’s show, it was at least somewhat appropriate. Still recovering from Sunday night’s SNL 40 super special, Fallon was eager to share his recollections of the evening with his studio audience (and also Questlove, who was actually there, but who charitably recounted the whole evening with the giddy Fallon). There were a lot of people there!

It's the moment we all knew would happen eventually -- and, based on the immediacy of the news cycle and when late night shows are actually filmed, it's the moment most of us also knew was happening yesterday -- but 'Daily Show' host Jon Stewart has finally announced his retirement after seventeen years at the news desk. Stewart's show films in the late evenings in New York City, so the news that he had announced his imminent retirement during a taping last night hit the wire many hours before the show actually aired.

Christoph Waltz would like you to believe that he's always starred in darker, more dramatic fare. Christoph Waltz would like his fans to think of him as a two-time Oscar-winning actor. Christoph Waltz has some secrets.

When you've been in Hollywood as long as Michael Keaton has, you've probably seen a lot of weird stuff created by fans -- a lot of signs and strange drawings and maybe a wacky letter here and there -- and although that sounds a little off-putting, Keaton is into it. At least, he's into it when your fan art is good, as was the case with a 'Beetlejuice' tattoo he spotted during a late night shoot on his upcoming 'Birdman.'

Rumors of 'Bad Boys 3' have swirled for years -- the last we heard, it was looking for a writer, though there was no word if stars Martin Lawrence and Will Smith, and director Michael Bay would come back for another outing -- but it finally looks like things might be moving in the right direction. At least, if you think that Lawrence returning for more action is the right direction. (Hint: it is).

Have you ever watched the CBS series 'Under the Dome'? No? It's okay, because 'Late Show' host David Letterman has, and he's more than ready, willing, and able to explain the dramatic series to his audience. Letterman is hip to the real plights inside the series -- sometimes, people want to leave, but they can't, because the dome...

Ice-T is a serious dude. He's serious about music, movies, 'Law and Order,' and also video games, particularly online shooting games, like Call of Duty. But the best part? He does not have a problem telling anyone -- even Conan O'Brien -- to just move out of his damn way when he and his "clan" come through (admittedly, they do have a pretty cool name, which Ice is not afraid to share).

'Jimmy Kimmel Live' host Jimmy Kimmel likes to have fun with his recurring "celebrities read mean tweets about themselves" segments, which always manage to be fun and strange and not too painful. Of course, if you know anything about Twitter trolls, you know that the tweets the Kimmel team picks are not nearly the meanest of the mean, they're just the right mix of rude and amusing. There are certainly much meaner tweets out there, and some celebrities actually want those.

So far, 'Tonight Show' host Jimmy Fallon has made 'NBC Nightly News' host Brian Williams rap (through the magic of editing) a stunning eight songs, from "Gin and Juice" to "Rapper's Delight." But last night's edition just might be the best yet, as he tackled Sir Mix-A-Lot's "Baby Got Back."

Well, this one pretty much sells itself. Jimmy Fallon unveiled a Father's Day-targeted take on his ever-popular "Evolution of Dance" on last night's 'Tonight Show,' and this one just hit it right out of the park.

Jonah Hill might want to work on his betting skills because he doesn't appear to understand the mechanics of it. The '22 Jump Street' star hit 'Conan' last night, alongside the other half of the burgeoning franchise's all-star comedic duo, Channing Tatum, to share some very weird (and very x-rated) tidbits about a bet the pair made quite awhile ago.

Do you like word association? No, wait, don't answer that, because there's simply no way you like word association as much as unexpected 'Tonight Show' star "Mets Bucket Hat Guy," who hit Jimmy Fallon's show last night for an association challenge that may actually leave your head spinning. It's both totally exhausting and weirdly exhilarating.