I build a mood light with a built in ir remote, all controlled by a webserver. You can change the colours or the tv program with your smartphone or nintendo 3ds or whatever wifi device you have got. You can also run really cool light scripts, such as a thunderstorm, or a relaxing water reflection program.
Have a look at my blog:
You can see a video and some pics there. The sketch will be added soon. If you have any questions feel free to ask.(English or German)