Yeah, this is getting pretty far afield, but if you want to see what IR floodlight/camera combinations look like, visit Disneyland. That park probably has one of the most extensive video surveillance systems of any place readily accessible to the public. (I expect Disney World is much the same).
Wow, I never knew that... then again, since Disney is its own government, I should have expected as much....
IR cameras are everywhere in the inside rides, especially in dark areas where visible floodlights would ruin the dramatic effect. Perhaps the easiest place to see them is in Pirates of the Caribbean. Just turn around and look backwards, and you'll see video cameras mounted overhead next to dim red lights.
Other rides where they can be easily seen include People Mover (never crowded), Haunted Mansion and Space Mountain.
Here's another idea... in terms of spyproofing one's house, how about throwing some radio-shack IR-detecting transistors outside the house, rigged to an internal alarm... Ifg a lot of these detectors go off, the folks inside can be fairly sure of some weirdos outside...