Wanna be the next Doogie Howser on the block? Start saving for this "pocket" electrocardiogram (EKG) called the Radar Sark. Silly product names aside, this thing is particularly useful at saving your life. It can check your heart to make sure it's performing correctly and to see if any abnormalities are present. Extremely useful in life or death situations where EMTs must make critical decisions. The product is touted as being vibration and impact resistant. So we're assuming it's something to keep in the car for when you crash it. Just be sure to wear your "Yo EMTs! I got an EKG in da trunk, fool!" t-shirt that day.
Pocket electrocardiogram [Akihabara]