The paparazzi caught actor Bradley Cooper — who’s in town to film the new David O. Russell movie — walking around Boston Common with 20-year-old British model Suki Waterhouse. Also spotted around town earlier this week were the famous folks affiliated with the “Hatfields & McCoys’’ pilot, which was scheduled to film in the South End on Tuesday. Virginia Madsen, who plays a McCoy, was spotted dinning at City Bar on Monday night. Rebecca De Mornay, who plays a Hatfield, dined at M.J. O’Connor’s. Sophia Bush, another McCoy, was at Empire on Friday for a table read and party for the pilot. Charlize Theron, who’s a producer on the show, continues to be spotted around the South End.