1. New York
Even tourists won't be acting that funny in the subway, if they just read first the clear instructions: How to ride the subway.
London Underground, the tube, that just celebrated its 150th anniversary!
Where you can get auditioned by the transportation officials and then get up on the stage i.e. the metro stations!
Tokyo Metro (I especially like the mobile phone restriction!)
And then we have...
Which is quite cute actually. Best way of getting back and forth the line is to buy a day ticket. You can get one for 1 to 7 days. One day day ticket is 8 euros.
Have a nice journey!