According to his Wikipedia page, Donald F. Glut is “an American writer, motion picture director, screenwriter, amateur paleontologist, musician and actor.” To that I would add “fanboy extraordinaire” (Pushing 70, Glut is now a respected elder fanman among the ComicCon set). His most notable work was the novelization of The Empire Strikes Back in 1980.

Glut became known to readers of Forrest J Ackerman’s Famous Monsters of Filmland magazine for the amateur films he made between 1953 and 1969—41 in total—many including unauthorized stories starring Superman, Spider-Man, Frankenstein’s monster and Will Eisner’s masked crimebuster, The Spirit.

Glut’s 1969 Spider-Man movie—which has a super-villain called “Dr. Lightning” not seen in the Marvel comic—was his final amateur film. It is considered, historically speaking, to be the very first Spider-Man fan film, and indeed the first live action attempt to put the character onscreen.

A 2-DVD set of all 41 of Donald F. Glut’s amateur films called I Was A Teenage Moviemaker was released in 2006.
 

Glut on set