 It makes people smile. The dude's got it going on. One of those is Shannon Tavern, a third-generation old-school Southie watering hole. Mike Bowen's grandparents started this place. The country star stopped in one night and had a blast. And since it got put on the Brian list, business has been crazy. Dude, you know, it's been happening. It was like my brothers and I, we took a picture out front the other night. The line was down L Street. It's a surreal feeling for a local spot, but the Bowens are grateful.