As the erstwhile The Rock will inform you in the charming but otherwise unnecessary introduction, this trailer debuted online at Machinima.

Surprisingly fun and effective, right? Any trailer that waits until the very end to so ostentatiously reveal Bruce Willis firing a giant gun from the bed of an El Camino is doing something right.  Willis is playing Joe Colton, the original G.I. Joe, but based on the way he's presented in the trailer, I'd prefer to think he's simply playing Bruce Willis, as if the famous actor is the only one to whom the Joes can turn after having been betrayed.

Tatum's back as Duke, and Arnold Vosloo is back as that master of disguise guy who infiltrated the presidency at the end of The Rise of Cobra.  Though you'll never see his face, Ray Park returns as ninja Joe Snake Eyes, while Byung-hun Lee also reprises his role as bad guy ninja Storm Shadow.  That's it for returning cast, though, and the new additions include Dwayne Johnson (obviously), Adrianne Palicki, D.J. Cotrona, RZA, Joseph Mazzello, Walton Goggins, Elodie Yung, and Ray Stevenson.

John M. Chu, the director behind Step Up 2: The Streets, Step Up 3D, and Justin Bieber: Never Say Never, looks to be directing action like he's got something to prove, which I suppose is sort of true.  He's working from a screenplay by Rhett Reese and Paul Wernick, the duo behind Zombieland.

G.I. Joe: Retaliation will reach a screen theater near you on June 29, 2012.