3D Gaming, when it works, is fcuking awesome. For shooters mainly...
Crysis 2 on PC with 3D Vision was absolute crap. No depth what so ever. On the whole though it adds an extra dimension to games which makes them twice as fun to play. If you're looking to do it on PC, you'll need a decent 3D Monitor - requirement being 120hz (60hz for each eye)
Stay away from the cheaper Samsung 22" model. I have it, and although it's not bad - being a first gen the ghosting gets irritating. The ASUS jobby is by far the best imo. Then of course you need the Nvidia 3D Vision controller which comes with a set of glasses. IMO it's worth every penny.
Couple of suggestions, play Batman AA and Black Ops - both work really well
For the record I used to take the piss out of my mate because he raved about it - but it is ace tbh, even more so as it's becoming more affordable. Fcuk the haters?
Be prepared to take a hit in frame rate, it munches it fairly hard
http://www.overclockers.co.uk/showproduct.php?prodid=MO-021-AS&groupid=17&catid=1851&subcat=
http://www.overclockers.co.uk/showproduct.php?prodid=MO-018-NV&groupid=17&catid=1851&subcat=