Actually, 3D may actually have something to offer...
http://www.eurogamer.net/articles/2010-12-14-killzone-3-split-screen-co-op-confirmed

With 3D, since they have to double the graphics output, it makes local co-op easier to do. It won't be co-op in 3D, but hey.

There was also a method patented a while ago for local co-op using 3D glasses a while back as well...
http://www.techradar.com/news/television/sony-uses-3d-trick-to-split-screen-for-multiple-viewers-704298

Nice to see a throughly researched article :/

Looks like co-op might actually be making a come back :)

Quite correct. We had the same thing happen in NZ. In 2005...

http://www.theage.com.au/news/Breaking/NZ-hacker-targets-voicemail/2005/05/13/1115843355125.html

And being a Microsoft product, it should include chair throwing.

Screw the towel. Where's my crowbar?