That K-Pop phenom Psy was slated to close last night's American Music Awards surprised no one — after all, he is the most liked musician in YouTube history — but Psy still managed to sneak in a little surprise of his own.

Mix master Hugh Atkin of "Will the Real Mitt Romney Please Stand Up" fame has pieced together yet another masterful mash-up, this time featuring President "MC 'Bama" rapping "U Didn't Build That" to the tune of MC Hammer's "U Can't Touch This."

MC Hammer just launched his search engine "WireDoo" at the Web 2.0 Summit in San Francisco. The singer-turned-investor says WiredDoo goes "beyond just the keywords" into "relationship search" and "deep search." Sounds intense. Time to sample Marvin Gaye again.

Given his warpaint, dark clothing, and facial expression that captures the angst and existential suffering of humankind, you might assume that this exuberant young man belongs to Homo sapiens juggalo—whose ranks have been gathering in southern Illinois this weekend to drink Faygo and pelt Charlie Sheen with trash.

MC Hammer pumped up a Silicon Valley rap battle; Nick Denton mocked a laid off New York Timesman; and a Fox Newser lashed out at the "hippies." The Twitterati love a fight.

Ben Huh ate spoiled mayonaisse; KFC inspired a foodie; and MC Hammer knows more about social media than some MBA students. The Twitterati displayed questionable taste.

Twitter's all about self-promotion. This we know. MC Hammer knows that, too, and apparently has been quite successful at it, which explains why Gravity Summit invited him to keynote this week's social media conference at Harvard.

Police say MC Hammer's cousin sexually assaulted a woman in a San Francisco-area hotel. Twitter will be in the lead of every story about this, and not just because that's where the accuser and accused met.

Are you sick of Twitter yet? Probably! But if not, wait patiently because the spunky little messaging service is teaming with a group of Hollywood geniuses to bring you an "unscripted show" that would "harness Twitter to put players on the trail of celebrities in an interactive, competitive format." Yeah.

Norah Jones turns 30 today. Celine Dion is turning 41. Warren Beatty is 72. Eric Clapton turns 64. Actor/comedian Paul Reiser is turning 52. Tracy Chapman is 45. Mark Consuelos, the husband of Kelly Ripa, is 38. Reality TV judge Piers Morgan is turning 44. MC Hammer is 47. And former 90210 star Ian Ziering turns 45 today.

• Lindsay Lohan certainly had an eventful weekend. After a judge issued a warrant for her arrest on Friday, Lindsay had a meltdown on Twitter and ended up in a fight with Sam Ronson that was so intense, the cops had to be called. It's not over yet: She's scheduled to appear in court today, although she may not show. [People, Gawker, TMZ, NYP]
• Olivia Palermo isn't making friends in her Tribeca apartment building. She strutted past the people gathered in the lobby last Thursday "completely oblivious" to the fact that one of the building's apartments was on fire. [P6]
• Gwyneth Paltrow and her trainer Tracy Anderson are having trouble finding people to pay $4,500 to join their new Tribeca gym. What a surprise. [P6]

It's technically shabbos but the gossip wheels keep churning. No rest for the weary, I suppose. Up next: broken hearts, broken contracts, broken skin and the return of demon Zoe.

Which is less appropriate: A brand-newmom performing at the Oscars, from bed, or an image-conscious Olympian trying to lay low in a strip club? Decide for yourself.

• Angelina Jolie was seen apartment hunting in Washington Heights. This comes weeks after Angie and Brad signed the lease on a $100,000-a-month home on Long Island. [Us, NYP]
• Michael Phelps has been hanging out at strip clubs, since it's the only place he can go without having his photo being taken. Good thinking. [P6]
• Lindsay Lohan showed up to a party at Southern Hospitality on Sunday so she could hang out with Chace Crawford. But then he ditched her and she spent the rest of the night "glued" to model May Andersen. [OK!, P6]
• Sarah Jessica Parker says the next Sex and the City movie will have to be more recession-friendly. You think? [Us]

For the Twitterati, everything's up in the air! MC Hammer sailed above the rain, Laura Rich and Kourosh Karimkhany tweeted about their startup launches, and Michael Gartenberg saw Google's cloudy future:

When the highlight of the evening is Twitter CEO Ev Williams meeting faded hip-hop star MC Hammer, you know the night was a waste. Indie-music consultant Corey Denis reports that the event "had ten actual music industry people there, tops." MySpace didn't have much to celebrate, either: It has yet to appoint a figurehead CEO to its MySpace Music faux joint venture. The only thing confirmed about Courtney Holt, the MTV executive widely rumored to be taking the job, is his gender. (Photo by Brian Solis/Bub.blicio.us)

When I got an unauthorized invite, via a tipster, to Dave Morin's birthday party Tuesday night, I knew I had to crash — if only to find out what he and his friends were thinking. Morin, you see, is a Facebook employee and a prime instigator of Camp Cyprus, the gang of Internet instigators whose shockingly fun video scandalized a shaken Silicon Valley. What's with these Web kids? First they go to Cyprus and destroy the entire economy by filming themselves cavorting at a rich friend's dad's vacation house on the Mediterranean. The horror! But then, what's worse, they return to the United States, unashamed, and continue spending money and enjoying themselves! All this economic activity cannot end well!Can you imagine, kids in their twenties having a good time? This must end! Didn't they get Sequoia's memo? Morin, Facebook's official speaker-to-geeks, turned 28 and rented a downtown art gallery Tuesday night to celebrate. After I tracked down Morin, I gave him a salami I'd picked up at VC firm Alsop Louie's party earlier that night. (It was a heartfelt regifting.) Besides Morin, I identified several other members of Camp Cyprus:

Rapper turned startup advisor MC Hammer recently swanned through the San Francisco offices of Imeem, praising the music startup for its "beautiful women." Why are startups so prone to opening their doors to the man formerly known as Stanley Kirk Burrell? Attention from a pop star, however marginal, however faded, provides the insecure geeks who run these companies with priceless external validation. Their work must be important — why MC Hammer came to our offices and ogled our female coworkers! The sad thing is that Burrell has been working the startup circuit since the last bubble.I remember when he swanned into the offices of eCompany Now, a long-gone tech-business magazine I worked at, in 2000, camera crew in tow. They were working on a documentary about a "startup" that never materialized. There you go: Even that part of Julia Allison's business plan isn't original.

Silicon Valley entrepreneur Stanley Kirk Burrell, who sometimes goes by another name and often wears very large pants, as the video above, has teamed with Flock founders Geoffrey Arone and Anthony Young to launch DanceJam, a new online video site. Burrell is perhaps best known for pairing with videoblogger Justine Ezarik of iJustine to endorse Y Combinator's MySpace profile tool.

Digital media types here in New York are always looking for a reason to celebrate their own achievements. A couple of months ago, a few of them began calling themselves the Founders Club and decided to start holding mixers around town. Last night, NBC hosted the latest in the series on the set of Saturday Night Live. Who showed? Mostly wantrepreneurs looking for a VC teat to suckle, of course. But I also ran into Digg CEO Jay Adelson, pictured above; a definitely not-pictured angel Ron Conway, who dodged my camera; a Facebook "founder"; and MC Hammer.