1080P, 240Hz, LED edge-lit and employing an industry-first 4-color filter (the secret extra color is yellow), Sharp's latest LE920 Series LCDs, measuring up to 68 diagonally, are the best displays Sharp can sell you. And they even support Twitter!
Their price is still unannounced, and the LE920 Series won't be available until May.
The sets look like big iPod touches in person, from a distance, because of the chrome rim.
In the meantime (this March, actually), you can pick up an LE820/810 Series TV starting at $1800. They'll range from 40 to 60 inches and keep the price down by using a normal 3-color filter and operating at 120Hz.
But you should decide for yourself whether or not 240Hz is really worth the hassle.