In its short life, the microblogging service Twitter has been the butt of many a joke, from the Twitter Tracker on Conan O'Brien's (short-lived) "Tonight Show" to...well, last night's episode of "The Simpsons." But if even O'Brien himself has come around on Twitter, is it time for the rest of pop culture to catch up? After all, there is evidence that Twitter can actually facilitate positive change in the world. Find out how after the jump.

Joaquin Phoenix was pretty awesome before he went crazy, but he was even more awesome after he grew the Manson beard, freaked out David Letterman, and fell off stages. What happened to the rap album and the documentary, Joaquin? Please don't be not crazy yet! We expected so much more from you. More after the jump.

Which of the following actions did 9-year-old Noah Cyrus not commit while performing a rendition of Akon's "Smack That" in the middle of a crowded room?

a) Sing the Akon lyrics "Smack that, 'til you get sore."

b) Spank herself.

c) Hump the air.

d) Curtsy at the end of her performance.

e) Garner applause from her onlookers, who held hands in a circle around her.

To see the video and the answer to this question, hit "continue reading."

Above, Jake Gyllenhaal tells Jimmy Kimmel how one trip to Pittsburgh turned him into such a hardcore Steelers fan that he just had to get a tattoo of a Steelers helmet with some sweet and sparkly stars on his lower back. But get a grip, everybody. It's probably temporary. In fact, it looks more like the iron-on transfers that are known to inhabit many cereal boxes and are quite popular at sleepaway camps. (What up, Camp Pinecliffe!)

But we did learn today that somebody else got a real tattoo. Find out who, after the jump.

11:01:29 AM Will Edmondson: So, Tara, you're TOTES ready for this question, LOL!: Are you on "Team Edward," or "Team Jacob"!?!
11:01:59 AM Tara Ariano: To quote Lucille Bluth: I don't understand the question, and I won't respond to it.
11:02:49 AM Will Edmondson: Well, I know what team I'm on, Tara. I'm on "Team 2012," in which a massive, apocalyptic disaster strikes the (fictitious) town of Forks and leaves nothing but a magma-filled fissure down Main Street.
11:04:07 AM Tara Ariano: If that did happen, a lot of (fictitious) people would be better off.
11:06:02 AM Will Edmondson: I'm going to go out on a limb and say that this movie wasn't directed at me and my demographic. But this was still one of the worst moviegoing experiences I've ever had. And yes, this is a blog, and the Internet and hyperbole. But I'm serious: watching "New Moon" was horrible.

As the resident Miley Cyrus expert, I'll just take a second to let you know that today is the Southern treasure's 17th birthday. Watch the clip above to see her very first interview with "Access Hollywood" from 2006, and click here to see how she's matured.

Miley celebrated this insignificant milestone with her family and her Twitter-hater boyfriend last Tuesday at the Canal Room, here in New York. The party had an '80s theme, and the cast from the Broadway show "Rock of Ages" performed. The cake was created by Buddy Valastro, who stars on TLC's "Cake Boss" and is responsible for heavenly creations like this. Blah blah blah. Here's the thing: I don't claim to own the '80s, but it bothers me when kids born in the '90s or even the '00s (...whoa) step in on the '80s and pretend like it was great when they weren't around to experience it. Yes, I was only around for the last part of the decade, but you can't throw a party where lace gloves and paint-splattered t-shirts are party favors if you were born in 1992. You just can't.

Stop me if you've heard this one before: after their parents separate, a teenage girl and her younger brother go to live with their father at his beach house for a summer. The girl is miserable. She doesn't have any friends, misses her mother, and really hates her father for leaving her mother all those years ago. Her brother, on the other hand, is having a blast, which further annoys her. Then one day, things start looking up for the girl when she meets a dashing young man who says nice things, like that he's "never met anyone like [her]," and writes "forever" on her sneakers. The girl feels happy when she's with him, and she softens. Suddenly, she's willing to rebuild the broken relationship with her father. Ring any bells?

No, it's not a book. Well, technically it is, and it's called "The Last Song" by the tear-stealer, Nicholas Sparks. But I never read it and technically, I didn't have to because I learned all that from the trailer for the movie version (which is after the jump). And now that I've bestowed upon you virtually the entire plot of this new movie, I bet you're wondering why you should even care to watch the trailer -- and I've got an answer for you. This is the movie where Miley Cyrus (who teaches the "Hoedown Throwdown" above on "Access Hollywood," and plays the aforementioned daughter in the movie) met Liam Hemsworth, her rumored boyfriend and the evildoer who got her to delete her Twitter account. In other words, this is the movie that caused one of the biggest and most fun ways you waste your time at work to go away. That's why you should care.

While "Family Guy" creator Seth MacFarlane was busy with his horrible, unfunny, very bad comedy special, his first series managed to squeak out a pretty good episode last night. The show skewered "Hannah Montana" and, in the process, the other Disney-produced tween robots that will control the Earth in two or three years. It also managed to expose the nationwide epidemic of evil, closet-dwelling monkeys. The silent killer! Full recap after the jump.

Last night, Jon Stewart addressed how CNN believes Senate Majority Leader Harry Reid put a public option back into the proposed health care bill because his fellow Democrats wouldn't stop singing in places not meant for singing. So according to CNN's logic, all you have to do when you want something is sing a happy tune until you annoy the bejesus out of people? Is this common knowledge? If it is, somebody should tell Joe Lieberman, because he's doing it wrong. Watch the clip above to see Lieberman's preferred method of annoyance, and click "continue reading" for a full recap of last night's late night TV.

The results of a recent poll on JSYK.com (or "Just So You Know," AOL's site for 9-15-year olds) pinned Miley Cyrus as having the worst celebrity influence of 2009 after receiving 42% of the votes in the category. She beat out Britney Spears, Kanye West, Shia LaBeouf, and Vanessa Hudgens for the title (the last two are in there because they drove drunk and took nudie pics); the site chalked up Miley's "win" to the "questionable dancing" she did at the Teen Choice Awards. So raging to a totally awesome song in hot pants on an ice cream cart is something other 15-year-olds think is a big no-no? I wouldn't have guessed. But even Papa Cyrus thought it was okay (above), so I must not be as in touch with tween culture as I thought I was.

Miley must feel so betrayed! The fans she spends months on a tour bus for shot her down in this poll! I mean, 16% of tweens did put her down as their favorite female artist, so that was kind of them, but "worst influence of 2009"? When cold-hearted Kanye was a choice? What if she takes this as a sign we don't want to party in the USA?! These tweens might have gone ahead and wrecked the best thing their age group had going for it.