Years ago, I had a boyfriend who would carefully fold his pants (making sure there was a crease down the front of the legs) before putting them in the washer. When he moved the load over to the dryer, he'd shake out the pants, carefully fold them again with the crease, and put them in the dryer. Personally, I thought he was nuts, but thought to myself "what does it hurt". He swore that the pants came out with no wrinkles and a better, more defined crease.