If you're after a seriously large screen, there's a Sharp LCD TV that measures 108 inches diagonally. Unveiled at the 2007 Consumer Electronics Show, it will probably be sold in small numbers to corporate customers.
For the rest of us, 50 or 60 inches is usually what will fit comfortably into an ordinary room -- and all that can be paid for out of an ordinary wallet. Sharp's super-huge screen is more a promotional tool than profit-making product, meant to draw attention to its smaller, highly rated line of AQUOS LCD TVs.