At a time when most of his contemporaries are resting on their laurels, Bobby Rush-a 50-year veteran of the stage-continues to be one of the most exciting and creative artists in the R&B/blues arena. For decades, his provocative and colorful Chitlin Circuit show has been a staple in the black community as well as a cult sensation in alternative circles. He’s also been the subject of a documentary titled “The Road To Memphis,” Richard Pearces film in the PBS series Martin Scorseses “The Blues.”