Back Forty is a staple in my restaurant rotation. They have hands down the best BBQ in the Bay Area and their new facility is top notch. I mostly eat in the bar because we love the atmosphere...huge TVs, great staff, live music (sometimes) and a good local crowd.
I'm a sucker for their "pick 3" combination dinner with my standard meat selections being Beef Brisket (juicy), Pork Ribs and (of course) Hot Link Sausage.
For lunch, I'll usually grab the Lone Star Stacker sandwich...can't beat some slaw and tortilla strips on top of Beef Brisket!
Their curb side carryout is real convenient as well if you're looking to grab something to take home.
I recently went to Da Bears vs. 49ers game and for our tailgating party we ordered up their "Meat-only Package" and did 50% Sliced Beef and 50% Pork Ribs with some slaw and potato salad on the side.
We fed about 25 Bears' fans (and two loser 49er fans) and it worked out great because they put the meat in an aluminum container that fit perfectly into a standard size chafing dish so we were able to keep it warm for hours.
All and all, this place is the most consistently good BBQ I've come across.