Given the amount of quizzes I have been to, it is very rare to see a quiz master try something I have not seen before. However, quiz I went to this week for the first time, review to follow, did just that. Upon paying your entry fee you had to select two numbered discs from the bag. Once you selected the numbers the Quizmaster marked them off on your sheet and those 2 questions numbers became your joker questions for the night worth triple points.
Quite a good idea I though :)