Ever wondered how bright is the infrared LED on your remote control? Just get a camcorder, or webcam and point it to the remote control. Press any button on the remote and there it is! You can see the infrared light coming out from it!

Most CCDs used in consumer cameras are sensitive to infrared. You'll also notice that most remotes emit pulses instead of a continuous light beam.

I wonder if it's possible to build an infrared flashlight strong enough to allow your camera to see in total darkness.