Quite a few here; back in 1988 I was in Seoul. I had a ticket to fly home to see my Dad in Dallas for Christmas. I showed up to Kimpo airport, went to the counter to checkin and was told my flight was the day before... They were able to accomodate me however.
Flew into Bahrain, I was waved through immigration, no problem. As I tried to clear immigration leaving I was detained as they had not stamped my passport coming in. I was grilled about sneaking into their country, almost missed my flight.