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Brad Pitt is ready to rumble -- in a new commercial.

While Angelina Jolie films Salt in NYC, the actor has also been spending time in front of the camera as well, shooting a new spot for Japanese cell phone company Softbank.

On Wednesday night, Pitt filmed with a giant sumo wrestler.

In one scene, the wrestler is suspended by four cables so it looks as if Pitt is holding him up.

The mastermind behind all this? Michelle Williams' current beau, Spike Jonze.

This is Pitt's fifth commercial for the company. In a 30-second ad last year, the actor helped a group of people in a stalled car -- and nearly got run over by a crowd of bicyclists when he tried to snap a photo of a topless sunbather.

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