Judge,
Orbs can be seen on video film as well as regular still pictures. They are not nearly as common however.
Orbs in pictures are 99% of the time just dust, moister, and/or shutter reflections.
Orbs on film are 99% of the time dust or moister depending on the location and circumstances.
We've captured an orb on film at the Orange County Courthouse.
Check it out here!
As for people seeing orbs...I haven't really heard of it the way it is described in the E-mail. I have heard people describe seeing glowing lights. I guess that could be orbs.
There will always be people out there that can 'sense' something, and another person will snap a picture and sometimes something will show up.
The primary way of detecting a spirit or orb, or ghost...whatever...is an EMF detector. These meters are used to detect Electrical Fields emitted from power lines and stuff...I have a couple of these and if there is something giving off energy it will find it...but again, that could be anything...so a reading alone doesn't really prove anything.
An EMF reading along with a drop in temperature...and someone saying they see something...and a toy firetruck starting up and going across the room by itself with no batteries...well, then you may have something!