This was the last Tom and Jerry theatrical short released by MGM, ending a run that lasted for over a quarter of a century.
The title is taken from William Shakespeare's Hamlet's "to be or not to be" speech: "To sleep, perchance to dream-aye, there's the rub."
The 34th and Final Chuck Jones Tom and Jerry cartoon.
The final Tom and Jerry cartoon of the Chuck Jones era (1963-1967).