in wow... i box 5 characters at once and use 2 laptops and my main xp32 box (i have been meaning to upgrade... been putting off any purchases for a while)

when i played shadowbane, i had 2 desktops and 2 laptops, exactly which combo depended on the situation. i would box 10+ toons normally (24 was the max i have controlled at once).

all done with keyclone, of course

edit: and synergy for mouse support between screens