Cooling down after exercise

Does anyone else have trouble getting yourself to stop sweating after exercising? I've always been a heavy sweater, but I used to think that it was at least in part due to being heavy. However, Im now a pretty fit 5'11", 180 with a 32" waist. Still, after working out, which is usually about an hour if you include streaching, 4-5 times a week, I still tend to sweat heavily 20-30 minutes after I get out of the shower. The only thing that Ive tried that works is taking a VERY cold shower, but that sucks, and I just cant do it most of the time.