Un bon bock (aka A Good Beer) is an 1892 French short animated film directed by Émile Reynaud.

Painted in 1888, it was first screened on 28 October 1892 using the Théâtre Optique process, which allowed him to project a hand-painted colored film, before the invention of cinematograph.

Reynaud manipulated the speed and repeated movements by moving the film back and forth through the projector to tell a visual story that lasted close to fifteen minutes.

[1][2] It is one of the first animated films ever made and was the first to be screened on Reynaud's modified praxinoscope, the Théâtre Optique, translated as "optical theatre".

No copy exists, as Reynaud threw all but two of his picture bands into the Seine river as he was suffering of depression at that time.