A Castle Rock film produced by Jerry Bruckheimer.
Two friends from Brooklyn are forced to deliver mob money to Australia. Their misadventures begin when one of them places his red jacket on a kangaroo while attempting to snap a picture. When the kangaroo bounces off, they realize the mob money is in the jacket and are forced to give chase through the Outback.

Much mystery surrounds Adam's role in this 2003 Blockbuster. He was not named in the credits, none of the Internet Databases originally associated him with the film but his "people" are claiming he was the uncredited voice of Kangaroo Jack.

And having listened to the unmistakable voice on the soundclip below I have to agree with them.

Download this file, have a listen and see what you think