I have read and re-read, and re-read Jan Karon’s Mitford Series, Michael Philips’ Secret of the Rose Series and his Russians Series over and over and over. I have watched Fireproof over and over and over.
I don’t have an upper limit as to the number of repeats, just a minumum amount of time between readings or viewings. Usually several months to a year.
I am like Thomas Jefferson, who wrote to John Adams, "I cannot live without books." Problem is, there are so many good ones to spend much time re-reading.