Like
background noise and
background music, background
vision is having some sort of
TV on, but not actually
paying attention. The way my room is set up I have my
monitor straight in front of me, and the
TV to the left turned 90 degrees. This allows me to put on the TV and watch it out the corner of my
eye.
Anime makes good background vision, as do some shows that are pure
eye candy like
VIP.