***REAL LIGHT SABERS***

Gizmodo has video, links and comments.  Also, May the 4th be with you: yesterday was Star Wars Day.

I like this bit of trivia from the Wikipedia article above - In a 2005 interview on German news TV channel N24, Star Wars creator George Lucas was asked to say the famous sentence "May the Force be with you." The interpreter simultaneously interpreted the sentence into German as Am 4. Mai sind wir bei Ihnen ("We shall be with you on May 4").