Why Iron Man's suit would not work

Pretty cool article over on Wired.Com about why Iron Man's suit could not yet be a reality. Of course we all know he is a comic book hero, but still it is a good read to see how far away we are from this type of technology.

One of the interesting paragraphs was about his repulsor rays.

"Even assuming that Iron Man can convert any stored energy in his suit into laser light with 100 percent efficiency, then to generate a beam powerful enough to melt a fist-size hole through a half-inch thick steel plate (which any comic book fan can tell you is well within Shellhead's capabilities) would require an energy pulse of more than 2 gigawatts of power, greater than the output of a nuclear power plant"