"As we wait for previews of Duke Nukem 3D to show up on the intertubes, Microsoft recently informed the masses at X08 in Toronto that the game would feature the option to record in-game clips and the ability to rewind a portion of the game when it releases sometime in September.

The first feature will allow players to record game clips during multiplayer matches and then share them with other users over Xbox Live ala Halo 3.
As for the rewind function, it will enable players to reverse ti..."

"3D Realms co-owner George Broussard has revealed in comments to Shacknews that Duke Nukem 3D could be on its way to the Xbox 360's Live Arcade service. Broussard stated that he had already held discussions with Microsoft concerning the project, picked a team to carry out the conversion, and was just waiting for the official go ahead.

"Truth be told, we've talked to Microsoft about it and have some people that would port it," he outlined. "[we're] just waiting on the good word from Microsof..."