I always do. I am wondering what you like to listen to.. Obviously Approach and departures are VERY important, so that you know what is arriving and departing, naturally. What about clearance deliveries. At large airports, I find it frustrating to listen, but, at smaller airports with not a lot of radio clutter, its one of the most interesting aspects becuase you know where the aircraft is headed. This may seem to be a dumb subject, but, I would be interested in hearing who takes a scanner to the aerodrome.