National geographic's "Testosterone Factor"...very informative and focused on what testosterone does to the male and female bodies and primates and such, very interesting

MTV's True Life "I'm on Steroids"....more focused on young people taking steroids for bodybuilding and sex change purposes, pretty interesting and fun to watch, however the young bodybuilder was kind of annoying

Hidden Lives; The Man Who's Arms Exploded.....A documentary/biography on Greg Valentino. More about synthol not steroids and ignorant people uneducated on the subject of steroids love to point out that this is what happens when you use steroids...haha what a joke.

The Science of Steroids....very informative and information/science based

American War on Drugs; The last White Hope....More focused around ALL illegal drugs however it is an extremely good documentary in my opinion

Testosterone Nation....focuses on the use of testosterone and other steroids, their characteristics and what they do to primates, animals, people, etc.

Pumping Iron....More focused on bodybuilding not exactly steroids but still cool

Doping For Gold by PBS for their Secrets of the Dead Crime Investigation Series....biased documentary about how steroids are Evil!!!! hahah still good to see their bull shit side so you have further proof of how dumb people are

Superhuman: Steroids, Part 1 by National Geographic....Kind of bias but still decent

Superhuman: Steroids, Part 2 by National Geographic

Series of videos following Kai Green when he was getting ready for Mr. Olympia...If you can find this one

Secrets of the Sexes: Testosterone Digger Test...I think it is like a British documentary or something. It was so so.

Ok so that was a long list and my hands are tired of typing and for now those are the ones I can remember. Hopefully this helps.