I love Japan. I know there's no tipping but I once had a restaurant bill (for a group) that was 5 yen short of a nice round (large) number, so I paid the round number with folding money and started to walk away. They chased me out the door to return my 5 yen!

I love Switzerland, too. I was once left 50 SFr behind at the pharmacy at ZRH (jetlagged, paid for a small item with 100 SFr note, picked up the smaller bills and coins but missed the 50. ) Got it back on my return trip through ZRH after they confirmed that they'd ended up 50 SFr over on that day. ^^^