Earthlings video

http://video.google.com/videoplay?docid=3251419433163515470&q=earthlings

Its ard 1hr 35 minutes long, but its definitely well worth the time.
It talks mainly about speciesim and contains many sections and sub-sections regarding the treatment of animals - including pets, animals used as food, animals used for their skins, animals used in entertainment, animals used in scientific experiments..
I would say, a pretty informative video and definitely an eye-opener for people who do not know of such cruelty.
Do note that there are scenes containing extreme violence and some viewers may not be able to stand it.