I'm wondering what exactly we can get away with when mentioning third-party properties. I've got the following things (among others) and I'm wondering if these are all right: I mention "he narrowed down the yellow guy in the kitchen" (Clue) I use celebrity names such as Denis Leary, John Lee Hooker, James Brown I reference a Chaka Khan poster I mention someone wanting to beat their high score in Frogger Someone asks for a Kit Kat bar I mention someone's Seinfeld tapes (yes, cassettes) get erased, and the line "No soup for you" I display Pac-Man in one scene I refer to someone as a Connect Four master My question is...exactly what can we get away with? Can we mention things in a sly way (like my Clue line above) but not say outright what the product is? What things mentioned in passing can we get in trouble for, even if they're just mentioned (no opinion or defamation is given)? Does anybody have any advice or want to read through something to see if I'm on the safe side?