Sony was the first to introduce the transformer mice ones which doubled up a Skype phone as well. Something on the similar lines is the Evergreen Navigator 365 laser mouse which opens up to a full fledged 6 button game pad. A great accessory for the laptop so you can catch with some retro games on the Nintendo Emulator. The mouse connects via USB and has a 1600 dpi resolution and is Windows compatible only. The Evergreen mouse is a Japan only product selling for 2999 Yen ($ 28).
Source : NewLaunches