There seem to be two parallel discussions on this thread, landing lights and PA's. A small comment on PA's. Beyond the standard announcement mentioned by Nicholas49 which is clear and precise and to the point, I think they vary as much as the individual characters of the person making the PA. I enjoy the captain informing passengers and saying "if you look out to right you will enjoy a view of such and such..." . I remember many years ago on a Cyprus Airways flight as we made our way over the Aegean Islands towards London, the Captain began pointing out the various islands as we flew over them and talking about the Greek mythology associated with each place in a lighthearted and humerous way. He had everyone enthralled. I thought it was a wonderful gesture and showed great character on his behalf.