Do not doubt the power of dedicated fans

The opening animation to 1984's Daicon IV, one of the bigger Japanese science fiction conventions.

This animation was made by a group of (at that time) amateurs. See how many different sci-fi franchises get skewered.

(If you're thinking that this looks really good for amateurs, well not long after this they became GAINAX, the company responsible for Evangelion and FLCL and other famous anime...)