I'll give you a second to cry. Ok now that that's over. They work pretty much like Spaces and Expose work on multiple monitors now (i.e spaces are one huge "space" across all displays, and expose is ...

ones of the labs i support at work had their monitor die, and i grabbed a 20" Acer from stock and took it down there to replace it. they had told me it was a Mac, but unfortunately they didn't tell me ...