Complex sentence: He has had television guest appearances on "Doctor Who", "L.A. Law", "Frasier", and "Ed" and n 2011 he made a guest appearance in the second season of Boardwalk Empire.
Split into simpler sentences: He has had television guest appearances on "Doctor Who", "L.A. Law", "Frasier", and "Ed". In 2011 he made a guest appearance in the second season of Boardwalk Empire.