If you are anywhere in the San Fernando Valley area, Dr. Hoggly Woggly's Tyler Texas BBQ is a good bet. The brisket is fork tender and the bread is fresh, In Thousand Oaks, you can visit Bandit's or Thousand Oaks Meat Locker - which is more of a open air wood cooking style rather than smoking (I prefer smoking, but the sliced tri-tip is tasty from there).
Go to Dr. Hoggly Woggly's for 2 things: Brisket and Sweet Potatoe Pie. You can't go wrong. I'll have to try Bandit's though.