After a few years of so little trailers and gameplay videos, L.A. Noire is getting everyone's attention finally with a few Behind the Scenes videos (which I do reccomend you all check out) and the game's first trailer that was released about 2 months ago.
L.A. Noire's first teaser trailer was released back in 2006, made entirely in CG, but it's all coming to life and soon too, with the official release date confirmed in the game's new trailer!
L.A. Noire was originally developed exclusively for the Playstation 3, but is now set to release on Xbox 360 as well. It is developed by Team Bondi and published by Rockstar Games.