Enjoy watching movies in 3D? Hate sharing the experience with others? Sony may have the perfect solution for you. The company just set a Japanese street date for their new head-mounted display "Personal 3D viewer." It's exactly what it sounds like - a home theatre system you wear on your face.

Check out the slightly creepy promo vid here:

While the addition of 3D may be new, this is not the first attempt at selling people on "glasses with a TV inside." Vuzix has been making "video eyewear" since 2005, and history is littered with companies that have tried and failed to popularize private viewing via headgear.

Here's one of favourite TV helmet fails, from Toshiba, circa 2006: