Oh, I am a firm believer in the value of the now and again power nap. It is truly an art. You have to hit it just right, too little is frustrating, but too long is not good either...you just have to find that sweet spot, but if you do you feel refreshed and ready to make the most of the rest of the day!
I am in full admiration of any practicioner of the power nap arts. I've heard that twenty minutes is the sweet spot, and I take it from your enthusiasm that you are master of the said discipline, OGP, I might have just felt a twinge of jealousy. Okay, maybe it is just happiness for someone that actually experiences a restful state, lol! Keep on nappin hard my friend!