First appearance of Beavis and Butt-Head.
There are three versions of this short that exist. There is the original Spike and Mike premiere, then there's the liquid television airing, then there's the series version that aired with the series (this version even having music videos).
This pilot has been released on three different sets. It was on the PAL VHS "Too dumb for tv", the Mike Judge collection volume 3 DVD and the Mike Judge's most wanted DVD.