Ever wanted to do chroma-keying without using the green screen ? Thermo-keying is the way to go. Grab yourself a thermo camera and an IR mirror set it up and bang. No problems with having to set up those expensive green screens it also allows you to wear any color you want without being able to see through stuff you're not supposed to. I read about something like this back in 1998 and it has taken me this long to find it on the web again. Only this time it is Japanese.