I have a Raspberry Pi on the way.
Since I’m mostly an Arduino shop, I have to think about how to interface my existing goodies with the new board.
This one looks cool:R Pi to Arduino Shields
It makes use of an XBee footprint to allow lots of other sensors. The same company sells them, but here’s the place I first saw that sort of thing:
Also, although I will probably use mostly SSH to connect to my RasPi, it’s also possible to use the Raspberry Pi as a “laptop” (monitor and keyboard); it looks like you can pick up a smartphone dock and do some creative cable management: RasPi laptop
Watch this space as I gather more Raspberry Pi info.