I've been searching for ways to avoid showcasing a TV in my living room short of chucking it into a dumpster (which is where it came from originally). Séura Television Mirrors are an answer to the problem, and a very sexy one. By using a specially designed two way mirror the company is able to hide a television that can be clearly seen when on, but vanishes behind the reflective face when the power is shut off. The mirrors may be flush mounted, or hung on the wall in a decorative frame.

From 20x30 with a 15 inch LCD TV to 49x32 with a 45 inch television; there is a range of Séura mirrors to fit any decor, but not most pockets. The mid range 32x36" mirror with a 15 inch LCD hidden inside is almost $3,000, and the premium line caps out at $12,000. Not cheap, but a great piece for hiding an eyesore in plain sight.

Via HGTV