The first trailer for 'High School Musical 3: Senior Year' was released today on Disney.com! It features Zac Efron and Vanessa Hudgens talking about a first-look of the movie to air on the Disney Channel this Sunday. The commercial is interspersed with scenes from the upcoming film, but look closely -- if you blink, you might miss the action!

Sure, celebrities may be all glamorous and cool, but inside they could potentially be really big geeks. GameDaily investigates the arguments for both sides of the question, analyzing stars like Zac Efron, Carrie Underwood and more.

Take Jack Black for instance -- he might be a nerd because he's slated to star in the game Brutal Legend, and his band, Tenacious D, has a song on Guitar Hero III. But, he may not be a nerd because, according to the site, he's in a rock group, made music cool again in 'School of Rock.' Check out GameDaily's rundown and decide for yourself.

According to Star magazine, Zac Efron isn't really fond of showering. The tabloid mag says that the 'HSM' star doesn't bathe regularly and uses baby wipes to combat the B.O.! Ew! Read about this and more in AOL TV's week-end celebrity gossip feature.

Sorry, guys. Although a fourth 'High School Musical' movie is in the works, you won't be seeing the same faces in the next installment of the series. "This is probably going to be the last one for a lot of the cast," Zac Efron told MTV. "It's graduation, a lot of us have to move on."

Zac who stars in the upcoming 'Seventeen Again,' says he's enjoyed his time at East High to the fullest. "It's kind of an honor to have ever been a part of it, so I'm thrilled just to have done it -- the fanbase that it created," he adds. "We're making a great third film and I think it's going to be a great legacy to leave for the Wildcats."

'High School Musical 3' will be in theaters later this year.

Those eyes! That smile! Zac Efron has won over swarms of fans with his gorgeous looks, one-of-a-kind voice and smooth dance moves, and his star is still on the rise. Are you one of his biggest admirers? Prove your fan status with this brand-new KOL quiz. Watch out, there are some tricky ones in there!

Zac Efron and Vanessa Hudgens are making it clear that they're a couple (as if we didn't know!). Word on the 'High School Musical 3' set is that the lovebirds were all about PDA last week.

E! Online reports that during a 15-hour shoot on Tuesday, sources say Zac and Vanessa were not only giggling and holding hands between takes but they were sprawled out "like lovers on a picnic."

"When they're not needed on set, they're on each other's laps," says a set source. Ahhh, to be young and in love and working on the most anticipated teen sequel -- together.

This year is all about 'Superbad,' according to the MTV Movie Awards nominees list. The raunchy comedy raked in five nods including best movie and best actor for funny guys Jonah Hill and Michael Cera.

Also leading the categories are Ellen Page, who is being recognized for her starring role in 'Juno' in the best female performance category. Zac Efron will be battling it out for best breakthrough performance.

Fans can vote for their favorites online at MTV.com up until May 23. The 17th annual awards show will be hosted by Mike Myers (again) and will air on June 1.

This week, new mommies Jennifer Lopez and Christina Aguilera hit the town, while Ashlee Simpson showed off her new engagement bling. Zac Efron cruised through JFK airport, and Gwen Stefani took cutie pie Kingston to the beach for family day. See what else went down in the lives of your fave celebs in this week's PopScene.