At work we have two screens but one computer - well, we're on a network so have multiple servers- but the two screens work like one large one so you can have multiple programs running and files open. Kind of fun how the cursor jumps from one screen to the next.
I find when I set my laptop up and work on it with my computer I will forget which keyboard to use when I want to type something in, then have that frustration flash when there's no response where I'm looking :twisted: