Haha Rob actually did something really cool at the 08 Charlotte show during the end of LOATR. He stood up from his drum set, put up the rock on devil horns thing, smiled when a bunch of people cheered, and then sat back down.
On the topic of this thread, at the 08 London Night 2 show, at the beginning of Papercut you can hear Chester go "When I pretend...", which are the first words to Lying From You.