US Patent 7154428 Remote control with selective key illumination

A system and method for facilitation and encouragement of user interaction and functionality with a multimedia program via an entertainment system and remote control device. The entertainment system and remote control device are in two-way communication to accomplish various interactivity functions and features. The remote control includes one or more selectively illuminated buttons under the control of the entertainment system, such that when the entertainment system displays a prompt to the user requiring a response, the entertainment system may send a signal to the remote control selectively illuminating the button(s) to indicate to the user that the button(s) may be operated to make a response to the prompt.