I didn't have time to watch the whole DVD, but so far the tapes are exactly what I expected: raw, funny and sometimes, sad.
Bukowski was a character of himself and that role playing was a form to sustain his dignity in the quite hostile environment he was in almost all his life: bad parents, bad jobs, bad women, cheap booze, lack of money. So that's why he tried - and in the tapes this is apparent sometimes - to build a myth of his past, and amused doing that.
But it doen't mean that he is not true or authetic (his bad skin and bad teeth expose everything about his past). It only means that, from time to time, Bukowski looks TOO MUCH Bukowski than one would expect.
Overall, the DVD is a great document about one of the great 20th century american writers and gives to his readers a live and deep insight to some of his thoughts and poems.