The living room has LEDs around the edges of the wall pointing down. I took a FET and a power supply and hooked them to the PC that was controlling the TV and added a few basic commands to control the lights:

• Single - a single light value
• Blink - Blinks on and off
• Fade - Fades between on and off
• Spaz - Jumps between steps randomly

screenshot from putty showing led control