Aside from the misleading title which suggest more about sperm than self-gratification, its a healthy view good for the whole family, although I believe its wise to view WITH your children, instead of your child being left alone to be scared about it by some religious controlling pious nut in Sunday School.
It covers a lot of bases and does so logically and convincingly. I was disappointed, however, they did not address one group of people who are societal outcasts, those who are not desirable to others, because of the way they look . When it comes to attraction, men have it FAR worse than women: a woman that is generally deemed unattractive can still get sex a lot easier than an unattractive man. Since it's been proven that humans need basic physical contact with one another, they mostly have to resort to self-gratification if they don't.
BTW, I did not see Ali, in this documentary.