The dance was a sort of shuffle done by travelers trying to tilt bottles at the proper angle for refilling without splashing water on their shoes.

WSJ: With Bottle-Fillers in Mind, the Water Fountain Evolves

Since then, of course, Apple's done away with the Shuffle's included inline controls, and supplementing it with Apple's sort of-pricey headphones isn't ideal.

ENGADGET: IRL: Nexus One, Sansa Clip Zip, DeLorme PN-60 and the HP TouchPad