A major Andrew Wyeth retrospective opens this week at the Philadelphia Museum of Art. It's one of three current local Wyeth Exhibitions. We'll take a look at the painter who, despite being ignored by the art world for much of his seven decade career, has remained true to his own artistic vision. Albert Stumm looks into how artists and arts organizations are helping local economic revitalization. Jason Peifer previews A Skull in Connemara by Martin McDonagh at the Iron Age Theatre in Norristown, PA. In our regular exploration of the CultureFiles section at GoPhila.com, we speak with Pennsylvania Ballet artistic Roy Kaiser about his long association with the company.