Daniel Davis is an American actor known for his versatile performances in film, television, and theater. He gained widespread recognition for his role as Niles the butler on the popular television series The Nanny, which aired from 1993 to 1999. Davis has also appeared in various films, including Star Trek: The Next Generation, where he portrayed Professor Moriarty. In addition to his television and film work, Davis has an extensive background in theater. He has performed in numerous stage productions, showcasing his talent in both classical and contemporary works. Davis's contributions to the performing arts have made him a respected figure in the entertainment industry.