Well, I do keep mentioning 4x3, but there are newer tvs with that mode. I wonder how many people actually bother to use it, though. I know my neighbor doesn't, even after I showed him how much it improves the picture.
On most PAL 4:3 tvs with 16:9 mode the 16:9 setting can automatically be selected for anamorphic dvds if the dvd player is connected via the scart.
Although I don't think this is possible on ntsc tvs/players as the scart connector is a european (PAL?) standard.
PAL = "Pay for Added Luxury"