I was on my high school's "Reach for Top" trivia team (we were only actually on TV for one year, then the station that carried the show in the Maritimes dropped it for The Old Time Gospel Hour). anyway, we used to practice by watching tapes of old episodes. Turns out, they reuse their scripts every few years, They re-use them *exactly.* We went to the taping and after the first few minutes I thought "why do these questions sound so familiar?" They were the exact questions from the several-years old show we'd watched the day before. I felt a bit guilty, but we hadn't cheated on purpose.