Happened in the eighties in Spain. In a debate about the end of times, several philosophers were invited. The drunk guy is actually a spanish intellectual (Fernando Arrabal), a succesful book and play writer, movie director, philosopher, etc.

Even if you don´t understand what he says (He is speaking of milenarism) you will laugh. The incredible part is that the debate was not cut and they didn´t kick him out of the set.

More on Arrabal at:
http://en.wikipedia.org/wiki/Fernando_Arrabal