I got my parts the other night and decided to build my version of TheForce's arduino temp hack. I'm using a RBBB (really bare bones board) from moderndevice.com, and a shield of my own making. Its a nice very small unit. I love the RBBBs (and they're cheap)!
Anyway, here are the pics. I still don't have the switch or LEDs mounted yet. I'm going to scrounge those parts off something I have laying around.
Arduino on the left, temp hack shield on the right.
Here is the other side of the shield.
And here it is assembled.
