did a quick search and did not see this anywhere, found it today on engadget.com

Motorcycle Air Conditioning by EntroSys

pretty cool idea, basically takes your pillion seat to mount, but, provides heating and cooling. not sure how i feel about the giant tube connecting to you though...

on second thought, maybe it doesn't connect on the pillion, not sure how it would adapt to the monster though..

I could see a unit like that being useful if I lived somewhere really hot but beyond that... Kind of a PITA.

I can certainly see some great benefits since we live out in Arizona and riding in 120 degree heat for any period of time is awful...