This review pretty much captures the essence of Bo's;
http://www.sfgate.com/cgi-bin/article.cgi?file=/chronicle/reviews/restaurants/9252837133.DTL&type=food
The first few times I went to Bo's I ordered pork ribs. About the fourth time, Bo asked me (with a hurt look in his eyes) why I never ordered his brisket. I told him I wasn't crazy about most peoples brisket-it's either crunchy and dry or fatty and chewy. When I got my take-out order home, Bo had thrown in a small box of brisket. The stuff was magnificent. I'm hooked.