[Q] 2th screen for an Android Phone?

Hello,
i'm searching for a 2th screen for my HTC Desire S. I think this is no special question for the Desire S so i post in the general category, please move this thread if i'm wrong. I want this beause the screen of my phone is so small and i would use it for watching movies and maybe surfing on websides. The screen don't have to support touch input, maybe you could use the normal phone screen as a touchpad like on a laptop.
I don't even know if such a device exists but normaly you all no more than I do. I would prefer to connect the screen over Bluetooth but i would be happy with any solution.

Thanks