Gene Siskel famously said that his litmus test for giving a movie thumbs
up or thumbs down was asking himself which would be more interesting:
the film he'd just seen, or a documentary of its lead actors having
lunch.
-- Gene Siskel. quoted by Matt Zoller Seitz in a review of
the movie "Dying Of The Light" at RogerEbert.com (December 5, 2014).
http://www.rogerebert.com/reviews/dying-of-the-light-2014