Aero Sphere Fan
Designed in Japan (or by bees, we're not sure yet), the Aero Sphere Fan sports a unique look that can only be described as a "honeycomb teardrop". Supposedly this honeycomb design allows the fan to cool a larger room than you might expect, but if nothing else it will certainly be a conversation starter.
It's admittedly not a very cheap fan, at $134.40 + $28.63 intl. shipping, but it was too interesting-looking to pass up. It's available only in black on Amazon (and they've only got one left in stock at the moment), but you can get it in black or white from Japan Trend Shop for $120 + 54 shipping.