I've been teaching Anastasia's mate (*) to various children in the last few weeks. This meant that I saw the tactic based on 15. Bxd5 in the following OTB game from several moves away.
(*) See http://www.chess.com/article/view/mating-patterns-5-anastasias-mate
I was hoping for something like 22. ... b4 23. Nd8 Qxf3 24. Nxf7#, but was happy enough with what happened!