A few days ago I was really amazed to see the following position as a puzzle in Chess Today:
V. Onischuk - S. Dvoirys, Chigorin Memorial 2011, White to move.
Why amazed? Because Shirov fell for essentially the exact same trap three years ago in Morelia/Linares 2008 against Radjabov. (The only difference is that Dvoirys's last move was 20...g7-g6? while Shirov played the alternative lemon 20...Bf6-h4? instead.) That was a very high-profile game, obviously, the line is pretty well-known in general and Dvoirys is an experienced grandmaster and a Najdorf specialist. Aside from the fact that White's next move isn't that hard for a GM to find, how could he have fallen into the trap in the first place? It's very strange.
If you're a Najdorf player yourself, make sure you avoid this trap! The full game, together with the Radjabov-Shirov game and a couple of suggestions for Black can be found here.