Talking heat, as in spicy heat.
I could be wrong, but I think there are 3 very broad categories of heat when it comes to food.
1. Chile (or chili) pepper heat, where you get a hot burning sensation.
2. Sichuan peppercorn heat, where the sensation is a numbing feeling.
3. Horseradish or wasabi heat, where the the magic is felt along the nasal passages and can be best described as "throat clearing"
I personally like all three, but if I had to choose, it might be the peppercorn heat that I'd most miss if it was taken away from me.