The idea behind EMI's 911 rCard is so brilliant I'm surprised no one's done it before. You basically load all of your medical information on to the card and in the case of an emergency, hand it over to the paramedics who can then view your medical history using the card's 2-inch LCD. The card itself is only $79, although there's a $20 yearly subscription. Now if only they could get it to play MP3s.

EMI 911 rCard [via Oh!Gizmo]