ThunderPack, designed by Carmelo Amarena, is actually a redesign of hydrogen peroxide-powered jet packs of the 1950s. It looks like it will send you noisily into the air for roughly 35 seconds and about 8-12 feet off the ground. It cost him $100,000 to make and is not worth every penny. It did, however, provide us with some grade A- youtube entertainment. The entertainment factor is not so much the jet pack, but more the 1960s villain-ish music at the beginning.
info from engadget