touch screen interfacing

Hi.....I am working on a mobile robot ....in this project l need to install a interactive touch screen by which I can command the robot The screen size is to bee as large as possible . What kind of screen and what kind of interfacing with the arduino do you recommend me?

Here is a small one: https://www.sparkfun.com/products/8335

But you should also consider Processing to control your robot wirelessly, there are unlimited possibilities you could do with processing and the Arduino: http://processing.org/

Thnx