Will Smith Rocks 'MiB 3' Premiere Big Willy Style

Will Smith broke out the big guns -- Big Willy Style -- for the New York City premiere of Men in Black 3, in theaters this weekend, with his family by his side and an energetic performance with Pitbull at the afterparty on the U.S.S. Intrepid. Watch the video fun!

Video: Will Smith Keeps Swingin' at 'MiB'

"The movie is starting to look like it's gonna be really huge," an enthusiastic Will told ET. "I've made a lot of movies, but for some reason this one is feeling special. I'm like, 'Okay, we might be able to go Big Willy Style on it.'"

In addition to Jada Pinkett Smith and Willow and Jaden Smith, Will's Men in Black 3 co-stars Tommy Lee Jones, Josh Brolin, Nicole Scherzinger and Jemaine Clement were also among the star-studded guests who walked the red carpet.

Video: Exclusive - Go Behind the Scenes of 'MiB 3'

Out Friday, the long-awaited third installment of the Men in Black franchise finds Agents J (Smith) and K (Jones) feeling a little too old to battle unwieldy aliens day in and day out. But when history is somehow rewritten and K ceases to exist, J must travel back in time to put things right, literally diving right into 1969 to team up with a younger version of K (Brolin) to save his partner, the agency, and the future of humankind.