Found these videos talking about the Intellivision consoles. They are nicely done and quite informative, so I'm sharing them.
http://www.youtube.com/watch?v=0wrc47cs ... re=related
http://www.youtube.com/watch?v=n18fcBLf ... ure=relmfu
http://www.youtube.com/watch?v=0wrc47cs ... re=related
http://www.youtube.com/watch?v=n18fcBLf ... ure=relmfu