I apologise in advance for the crashing frivolity of this post. But I was curious because when I bought a non-contact thermometer specifically for the purposes of measuring my Macs, I went on a pointing frenzy. How many other people bought/found/borrowed a non-contact thermometer for examing the Mac hotness problem, and where is the oddest place you've pointed one? It's not the oddest place (which would be a bit gross) but I did for example point the thermometer at the sky on a sweltering day, and got a reading of -10C. Makes sense as it was a cloudless day.