For example, you can look at 37 short Fluxus films for those of you looking for a more fluxxy day. To pick out one, here's Nam June Paik's Zen For Film:
01: Nam June Paik - Zen For Film (1962-64), 141 mb
It was fun to finally see that film... I had read about it. And I referenced it in the written thesis that accompanied my MFA thesis show:
This [painted leader] footage evokes Nam June Paik's Fluxus film Zen for Cinema (1962-64), which consists of 1000 feet of clear, 16mm film leader projected onto a screen. Conceptual meaning might be "projected" onto the film by a spectator, but, similar to [my thesis] Frames, the formal content evolves from the use of the film [quoting Michael Rush]: "With each additional screening of the film, scratches, dust, and other chance events of film projection inevitably occurred, thus rendering the film new, in a certain way, each time."