I was interested to observe, on a BA A321 flight from MAN to LHR a few weeks ago, the person sitting next to me, a BA B767 captain in uniform, pay full attention to the briefing and afterwards study the safety card. And I didn't get the impression that he was just trying to set an example for the rest of us!
One thing that often puzzles me, is that we are told to check where our nearest exits are, but never told the row numbers for the overwing exits. Most of us can remember the row we are sitting in, and many could do the sums necessary to work out how many rows to count on our way to the exit.