Check out this preview of the Table PC from Lenovo --- essentially a big tablet (27 inches) that you can set on your table, or on the floor. Check out the video from the news article --- http://www.usatoday.com/story/tech/columnist/baig/2013/01/08/baig-lenovo-ideacenter-table-pc/1817547/.
It's yet a different take on tablets, from the smart phones to the 6 or 7 inch readers (or mini iPad) to the 10 inch Nexus and iPads, now we have these big tablets. Seeing them play air hockey just gives you a glimpse of what's possible. Imagine a much larger tablet, maybe in a few years we'll see them as large as a table, and people can play all kinds of games, even card games (with the dealer right in the middle). The possibilities are amazing!