Taking a trip down porn memory lane to watch the opening credits of groundbreaking 1970s epic "The Opening Of Misty Beethoven" can help teach us why it was so groundbreaking in the first place. For starters, it actually has opening credits, which was a lot rarer than you might imagine for porn flicks in 1975. It may also be one of the first instances of the popular "straight-buttoned man strolling through the red light district" montage: this announces to the audience that they are about to enter a gritty, grimy underworld of carnal pleasures. Finally, the young man writhing in ecstasy under the names of the art director and his assistant pretty much defines the term "porn mustache." If all that doesn't make the viewer want to stick around and see what happens next, we don't know what would.
· "The Opening of Misty Beethoven (Intro)" (youporn.com)
· See also: "The Opening of Misty Beethoven" (Wikipedia)