Denis Johnson's Jesus' Son has some Buk elements. Raw stuff but lacking Buk's humor. Also, there's this chick whom has been nicknamed Bukowski in a Sundress (Kim Addonizio). Reading some of her stuff now. Not bad.
This is by far the best Bukowski documentary I have seen. Even the music fits. It's as if the man himself directed it. I heard that a bunch of tight-assed PBS contributors cancelled out the day after this was shown in '73. Think Buk would have found that quite amusing.