Ha, I remember an old flight in my Twin Commander over the Rockies about 8 or 9 years ago. I was always so terrified of firing up the Janitrol in the tail, I just put my ski gear on and flew it without heating. But this time it got cold, and I mean real cold. I was adding more and more clothes on top of the ski gear. Finally, I couldn't take it anymore and did a landing just to warm up. I still remember the looks I got when, to them, what must have looked like a madman, stumbled out of the plane like a popsicle (with odd clothing items and double hats), only to immediately demand them to guide me to "the nearest place that could get me a hot chocolate".