Contrary to popular belief, "Spider-Man" was not canceled because of low ratings. In fact, the series performed well in the ratings, but TV politics were believed to have played a role in the cancellation; CBS executives apparently wanted to shed the network's image as "The Superhero Network," so they canceled the show, in addition to "Wonder Woman." (However, "The Incredible Hulk" remained at the network until 1982.)
An entire episode had to be shot within seven days. In an effort to save time when Nicholas Hammond shot the Peter Parker scenes with the first unit, the second unit was out with Freddy Waugh shooting the Spider-Man stunt scenes since 85% of the scenes featured Peter Parker and only 15% featured Spider-Man.
This is the only Spider-Man TV show where Peter Parker's boss, J.Jonah Jameson doesn't believe Spider-Man is a menace.
CBS wanted to land Nicholas Hammond to play Peter Parker after seeing him perform in an English play at the Mark Taper Forum in Los Angeles. Hammond accepted the role and told them he wanted to do a realistic portrayal of the character. He did not want it to be set up as a comedy like the 60s Batman TV show.
The series premiered as a feature-film on CBS in the United States. However this film was unique in that it was the first Spider-Man production to have a theatrical release. Its theatrical screenings were exclusive to Europe.