My Architect is far and away my favorite of these three, in fact one of the best documentaries of the last few years for my money. Also enjoyed The Wild Parrots of Telegraph Hill, which, oddly enough, I also saw in San Francisco. (My kids liked it, too.) I also read the book, which fills in a lot of details which the film couldn't cover.
One of my favorite jazz documentaries of all time is Time Is All You've Got (think that's the title, if my brain is working properly.) It's about Artie Shaw.
I also recently rediscovered that Peter Watkins "You Are There"-style documentary about what would happen in England if a nuclear war broke out, The War Game. They actually showed this to us in high school, and ironically at that time it couldn't be seen in England. It was made for the BBC in the 60's and then the BBC refused to air it. For 30 years.
Also, loved Crumb. Very much liked The Fog of War too, but then I'm a big Errol Morris fan. Fast, Cheap, and Out of Control is probably my favorite Morris film. One of my friends contends that it's a bit too long, and he's got a point, but I still love it.
Also really liked those Thames Television/Brownlow documentaries about Chaplin and Keaton.