The only reason to think that Power A's officially licensed Star Wars Darth Vader Wii Sensor Bar holder is a stupid idea is that you didn't think of it yourself. Or maybe the price.
While we still haven't received the definitive Jedi lightsaber battling game for the Nintendo Wii, Power A brings us what could be the next best thing. The original dark lord of the Sith extends his weapon in a challenge to all that would have their motion tracked. The fully-licensed Vader bust has a slot that fits your standard, first-party Wii sensor bar, filling a hole in your entertainment centre that you never knew existed.
The Darth Vader Wii Sensor Bar holder should be available at Amazon.com and Toys R Us locations across the US. There is, unfortunately, much fear in the price. $US39.99 is a bit steep for a thing that holds another, more important thing, even if it does look rather cool.