It always stirs up a bit of confusion among the infrequent travelers when the FA's announce the flight time as the gate-to-gate time, and then when the captain comes on a few minutes later, he announces the flight time as the wheels-up-to-wheels-down time. I love looking at all the joyful faces of people who hear the captain and think it means the plane will arrive significantly earlier than scheduled, while I realize we'll have a potentially lengthy taxi and runway queue on either end.