Seat belt check
For some strange reason I have most unusually twice in recent trips found that I hadn't fastened my seat belt - once prior to landing, and (today) prior to take off. On both occasions I discovered the fact through my own belt check (I always tighten it for take-off and landing). On both occasions the cabin crew failed to notice that I hadn't belted up! This by the way, before you point the finger at less reputable carriers, on a major American and a major British airline. I tell you this only as a friendly reminder to you busy folks not to overlook some of the more fundamental safety checks. By the way, I have also, on more than one occasion, had to ask the pax in front of me to place their seatbacks in the upright position before take-off. You seem to notice it for landing but not as pften for take-off. Once again, please don't take offence, this posting is intended only as a reminder.