While not 100% invisible, I've always been impressed by this video of an invisibility cloak that was produced in japan. http://www.youtube.com/watch?v=JKPVQal8

While not 100% invisible, I've always been impressed by this video of an invisibility cloak that was produced in japan. http://www.youtube.com/watch?v=JKPVQal851U http://www.youtube.com/watch?v=JKPVQal851U