Sometime this summer I watched the Samantha Brown Thailand Travel Special and in it she sank her feet/legs into a fish tank, and these little fish nibbled on her feet. I was quite tired after 5 hours at Dusit Zoo and sat down thinking about this and whether not it would relax my tired feets. I turned my hear to the right and there was Dr. Fish Spa. I paid 30 baht for 15 minutes of this. It feels you are being tickled and also pinched occassionally. I don't know if my feet were any smoother but I definitely felt relaxed...probably because I sat for an extended period of time the first time that day. Quite the experience though!