Harry Shearer is an American actor, comedian, and writer, best known for his work on the animated television series The Simpsons. He voices several iconic characters, including Mr. Burns, Waylon Smithers, and Principal Skinner. In addition to his voice work, Shearer has a background in music and has released several albums. Beyond his role in animation, Shearer is also a co-creator and star of the mockumentary film This Is Spinal Tap, which satirizes the rock music industry. He has been involved in various television shows and films, showcasing his versatility as a performer and entertainer.