From Wikipedia, the free encyclopedia Pat Harrington, Jr., (born August 13, 1929) is an American voice, stage, film and television actor most popularly known for his role as building superintendent "Schneider" on the CBS sitcom One Day at a Time. His father, Pat Harrington, Sr., was also an actor.  Description above from the Wikipedia article Pat Harrington, Jr., licensed under CC-BY-SA, full list of contributors on Wikipedia.