Late Show with David Letterman Season 11 Episode 17 Tom Cavanagh, Ray Wald, Dido ( Air Date 2003-09-30 ) Genre Talk, Comedy category. Overview "It's time for "How Many Guys in Gorilla Suits Can Fit Into a Eyeglass Store?" Quote Dave: "I was going to buy a pair of eyeglasses, but the optical store was full of gorillas."".