Generally I think gadgets are kind of crazy but this is actually pretty cool.
Right now on Amazon they have the Oregon Scientific AW131 Grill Right Wireless Talking Oven/Barbeque Thermometer for $39.53.
Basically the way this works is you stick the censor inside the meat on the grill and the griller can WALK AWAY (say play corn hole or grab a beer.)
He can keep an eye on the temperature on the wireless device so he doesn’t have to stay by the grill the whole time!
Amazon also has several other models you can check out!