What is the most amazing chess position you have seen? What is the most amazing chess position you have seen?

I have been wanting to ask this question for a while, but feared it would be closed. Since the "Uniquely Satisfying Puzzle" and "What is the most complex chess problem?" questions were not closed, I am going to post it. I hope that this is not voted closed as it is a chance to share some amazing positions.

Please post only one position per answer, but feel free to answer multiple times.
And one last one from a real game. Black to move and win.

 [Date "2003.??.??"]
 [White "Ibrahim"]
 [Black "Ibarra"]
 [FEN "3q4/1p1n1pk1/p1r1p1p1/2P1Pn1p/1P1N1P2/B5rP/5RPK/Q3R3 b - - 0 1"]

 1... Nxd4 $1 2. Kxg3 (2. Qxd4 Rxa3 3. Rd1 Qh4 {is just up a piece.}) 2... Qh4+ $3 3. Kxh4 Nf5+ 4. Kg5 Nf8 5. g4 {and there is no defense to....} Nh7#