From http://www.cs.berkeley.edu/~bh/ Scratch section.
What was he like in person? I've used Logo quite a lot in teaching maths and I've always wondered how bh ran his classes.
I actually learned more about his personality by reading Simply Scheme for the precursor class to CS61A (CS3) since I was a complete noob to programming at the time...his book was really fun to read though and I learned a lot that semester.
I think I ended up reading a couple of Brian's essays on his UCB page as well, which helped me gain some additional appreciation for his background.
A few years later I picked up a copy of the book Hackers (by Steven Levy) and it was there (during the section about the early days of the MIT Hackers) that I saw his name mentioned and I thought it was so cool that I had had him as an instructor :-).