My nomination for my favorite BBQ in my own backyard is Mountaindale BBQ, on Mountaindale Road just outside of Frederick Maryland. The establishment doubles as a general store, but it's the BBQ, particularly the Texas style beef brisket sandwiches that keep me coming back. I had always had a preference for pork bbq, and I still usually do, but the brisket at Mountaindale is beyond exceptional. The baked beans are yummy too.
There's another new 'cue joint in the Frederick area, Chubby's, which is locate right on route 15 near Emmitsburg. I've been there twice. Once it was exceptional, the other time just O.K. I guess you could say the jury is still out.