There was another topic going on remote thermometers that reminded me of this. There is an instant read thermometer that is truly instant read called the Super-fast Thermapen. I was given one as a gift for Christmas and can honestly say it's the best thermomter I've ever seen.
It leaves a very small hole in the meat (or whatever) and gives an accurate read in under 4 seconds. Not cheap, but you get what you pay for. For anyone interested, you can find out more info at http://www.thermoworks.com/products/thermapen/tpen_home.html