Check it. GOTY Editon coming with 3D glasses, no other hardware required. I am sure it won't be as good as the expensive Nvidia 3D but I have read that it isn't bad. Also onlookers watching your game without glasses should get a fairly clear picture too.
Unclear if the PC version is getting the 3D too?
Batman: Arkham Asylum 'Game of the Year Edition' Coming to North America with 3D Glasses - Shacknews - PC Games, PlayStation, Xbox 360 and Wii video game news, previews and downloads
Darkworks shows off TriOviz for Games 2D-to-3D SDK, we get a good look -- Engadget
Unclear if the PC version is getting the 3D too?
Batman: Arkham Asylum 'Game of the Year Edition' Coming to North America with 3D Glasses - Shacknews - PC Games, PlayStation, Xbox 360 and Wii video game news, previews and downloads
A bit more on Trioviz 3DAs with the European edition, the North American re-release sees TriOviz 3D support added to the PlayStation 3 and Xbox 360 versions, with the retail package including the 3D glasses required to take advantage of said support.
Darkworks shows off TriOviz for Games 2D-to-3D SDK, we get a good look -- Engadget