If you were at a loss for hot hip-hop dances to pull out at your cousin's wedding, here's the list for you. The Soulja Boy has proven to be the year's biggest dance craze with film star Natalie Portman jumping on the bandwagon and receiving a lesson from Mr. Crank That himself, and Josh Groban admitting to having mastered the dance.

Check out some other moves worth trying out.

Soulja Boy, 'Crank That (Soulja Boy)'
Soulja Boy built a movement around the catchy -- yet complicated -- dance craze, which is actually a combination of the latest dirty south dance moves.

To prove that the Soulja Boy dance has some serious legs, actress Natalie Portman appeared on MTV's 'TRL' to promote her new movie, 'Mr. Magorium's Wonder Emporium,' and admitted that she wanted to learn how to do the dance. Luckily for Portman, Mr. Crank That was in the building and came onset to give her a quick lesson.

The actress wasn't exactly a quick study, but did manage to follow along while Soulja Boy bounced around the stage. Soulja Boy mania continues with the rapper continuing to dominte the Top 11. Check out this week's Top 11 Show.

This is a crazy time for Soulja Boy, whose debut album 'Tell 'Em,' hits shelves on October 2. Soulja (real name DeAnda Cortez Way) performed at the VMAs for the first time this year -- although he did have some trouble partying it up right due to his age -- and scored a No. 1 song with 'Crank That.' Not bad for being only 17.

"We're doing big things this year and the next year," he tells PopEater. "The album is crazy. I got dance records, R&B records, funny records -- I got a song on there called 'Y'all' that's very funny."

While Soulja is doing well for himself, he's ready to share the wealth -- particularly when it comes to the ladies. "I got a song called 'Soulja Girl,'" he explains. "It's touching my female fan base. Once I perform that, it's going to go down."

Artist: Soulja Boy
Song: 'Crank That (Soulja Boy)'
Why You Should Watch: He's only 17, but he's got a No. 1 hit single from his yet-to-be-released debut album 'Souljaboytellem.com.' Check out why it flew to the top of the charts in Soulja Boy's dance-fueled video.