Don't have dual heads myself, but supposedly, some games are supposed to take great advantage of this feature. For instance, imagine you are playing Mechwarrior 3, isn't it annoying to have to press the F-whatever key to bring up your wingman functions? I think MW3 was one of the games that was supposed to take advantage of dual heads. In Falcon 4, I believe you are supposed to be able to have all of your MFD's (Multi-Function Displays) on one screen, and your HUD view on the other. I am not sure if this was actually implemented, but I remember reading it somewhere at one time. This would rock for games to have a map on one screen, and the POV from the character on the other. I don't think it ever really caught on because the customer base and desire for it just wasn't big enough.