LG's disappearing TV
There when you need it, but rolls away when you don't.
There are three ways to have it setup:
It'll cost ya though.. It's likely to be over $8,000 USD.
Samsung goes big
It's called The Wall for a reason! It's 219 inches. 18 feet! 5.5 meters!
It's made up of 16 panels.. and if that TV isn't big enough, you can add more panels.