Interview with Spielberg about the Crystal Skull. Which I have not seen. And he claims people now say "Nuke the Fridge". Instead of Jump the Shark. Which I doubt.
http://www.cnn.com/2011/10/27/showbiz/movies/spielberg-indiana-jones-4-ew/index.html?hpt=hp_t2
http://www.cnn.com/2011/10/27/showbiz/movies/spielberg-indiana-jones-4-ew/index.html?hpt=hp_t2