Skrillex (né Sonny Moore) was the guest of honor at a private birthday party in Hollywood Tuesday night, when a close encounter with some birthday candles nearly left the dubstepper bereft of his signature tatty coiffure.

Boy King Mark Zuckerberg turned 28 today, striking fear and loathing into the hearts of everyone who is not a 28-year-old billionaire. Facebook will go public this week in an IPO that could value the company as high as $100 billion.

Here, finally, is the remix of "Birthday" to which Rihanna infamously invited her abusive ex-boyfriend Chris Brown to contribute a verse. His first line? "Girl, I wanna fuck you right now/Been a long time, I've been missing your body." Oh. Cool.

Unlike Angelina Jolie, Brad Pitt and Oprah, you weren't invited to Julian Assange's 40th birthday bash yesterday in Norfolk, England. Neither were we. But we've snagged an invite anyway. Here's a copy of the email sent to a few dozen of "The Most Dangerous Man in the World's" friends before the party.

Even though her birthday was yesterday, today's Ellen DeGeneres Show featured one last celebration: a surprise call-in song from Lady Gaga! After the serenade, Gaga and DeGeneres discussed the singer's new album, upcoming Grammy performance, and frustration with NYC weather.

From the Late Night Wars to Back to the Future's 25th Anniversary, it's been a year filled with awesome video. Celebrate Gawker.TV's 1st Birthday and our monthly trivia night on Tuesday at in your town!

4chan, the anarchic Internet messageboard, appears to be experiencing an identity crisis. Whereas terror campaigns against tweens were once planned amid stomach-churning images, a strong streak of do-gooderism has taken hold. In fact, 4chan is being downright nice these days.

Here's a video of a cat—a seemingly very, very angry cat—being completely unamused by the adorable, "Happy Birthday!" song that his owners (or owners' kids?) are singing to him. That said, since when do cats have birthday parties?

The grand dame of news aggregation, Huffington Post co-founder Arianna Huffington, turns 60 today. What should we give her? Last year, Arianna crowdsourced her birthday party. This year, we're going to crowdsource the ultimate Arianna Huffington birthday gift.

I'm pretty sure this kid didn't get his wish granted after they sung "Happy Birthday" and blew out the candles.

It's Madonna's 50th birthday today! And not 36 like her whacky religion says. Anywho, just to ensure that this event doesn't encroach upon some perfectly innocent item, please feel free to celebrate-or bash-the most famous woman on earth on her B-day to your heart's content in the comments. And if you come across other pics of her from back when she was adorable, that would be awesome too!

Grunge-breaking, Nirvana-discovering Sub Pop Records turned 20 this week! Awww! To celebrate, they mounted an attack on the Seattle Space Needle, and proudly flew their freak flag. And it was actually sunny for the event. Happy birthday guys! Video of the siege after the jump.

It's Balthazar's birthday today and like the good friend we are, we dropped by. Well, like an acquaintance, really, we crashed the party, assured that our presence would be much appreciated. To celebrate his baby turning 10, Kieth McNally is giving away free champagne. a fact that all but ensured that the place would be fully booked through the day into the night and stuffed with tipsy giddy diners.

To anyone wondering why Valleywag had no birthday message for Marissa Mayer: I wanted to avoid celebrating this sham holiday, since it's clear that this Google VP was not born of man.