This is the actual prop from filming episodes of the show, sold at auction:
You too can heat up the iris! Just click the buttons below to turn on the red LEDs behind it, or turn them off. It's no trick -- it really does physically turn them on (or off), so you can act like Sokar and freak me out at all hours of the night.
Unfortunately there's about a 5-second delay with Ustream's stream, plus I currently have a ten-second timeout on change requests (so as not to overload it...you never know...).
I will probably be tweaking this as time goes on, increasing or decreasing the delay or making the whole thing smarter, depending on how it's used/misused/ignored/abused.