First, I grill alot (I know it's NOT BBQ), so I rarely eat barbecue and can't compare it to the rest of the places everyone talks about.
I have now been to Bo's twice and the best things he does are the brisket and the sausage. The Niman Ranch brisket is almost fall apart tender, smokey, with a great meaty taste. It is a little salty in some areas from his rub but none of us found it overbearing. His sausage, which I believe he makes, is quite flavorful. The pork ribs are not exciting- dry, almost carbonized. The sauce is tomato based, fairly sweet and slightly spicey and served on the side, not on the meat. I found it compliments the meat nicely. Side dishes are identical for everyone: green salad, potato salad, a little piece of corn on the cob and a piece of baguette and seem like an after thought. Pies and frozen yogurt are available for dessert.
This is really a yuppie-Q place in an older upscale community. His prices are from about $10-20 for meat plus sides and a "3 way" of brisket, sausage and ribs fed three adults. Bo has a great selection of Belgian and microbrew beer and a nice selection of wine heavy on CA syrah and zin. Seating is available inside or on a nice adjacent patio. Call ahead for hours as Bo is a stickler for his times- I have seen him turn away numerous customers after his 2PM closing at the end of lunch.
If you go, go for the meat and beverage choice in a nice area. He offers a big barbecued steak for two with 24 hour notice that I want to try next time I go.
3422 Mount Diablo Road