My job (when I'm not editing that is) involves watching DVD's and BR's and assessing their quality and finding errors that I then fix.
I can watch up to seven and half hours of media a day sometimes and the more I watch the more product we can shift efficiently, but I'm a special case. If I stopped watching DVD's and BR's I'd be less productive and make less money. ZING!
Oh and I have a BA with a major in film.