We get this question a lot. How do I make my room work with a fireplace and a flat screen? Here's one solution, Picturehouse's Plasma TV Fireplace.
When you just want a fireplace, then that's what you have with the TV hidden from sight. When your ready to watch TV, a push of a button lifts it into view from inside the cabinet. An interesting solution to the conflicting focal points, but it's not a cheap one. Picturehouse is a UK company (we still have yet to find a US manufacturer), and the fireplace cabinet alone costs over $4000 (£2100.)
(via Shiny Shiny)