Paging Dr. Bones

Ever since Bones used his (extremely cool) medical tricorder to get immediate readings on those that were injured around him (usually the guy in the odd-colored shirt that got beamed down to the planet) we've imagined how cool it would be to know vital signs quickly. "How cool would it be" to wave a device over someone and know if they're breathing, their heart rate, blood sugar level, and other stresses.

Looks like we're getting closer. (link)

or..umm.. Maybe not. (link)