I posted this position yesterday:
The boy who was playing this game played the beautiful move 1.Ba6! pinning black's bishop and forcing black to play 1..Qc3 after which he was happy to win the queen with 2.Rxc3, but even happier when I told him this was checkmate!
However, may favourite move in this position is the quiet discovered check 1.Bd3+! forcing black to interpose with his bishop, 1..Bc6. Now that black's light squared bishop is pinned, white has mate by 2.Ba6, a very nice diagonal crossfire in front of black's king.
In a recent game I played online I reached the following position: