This is a great idea for a thread! Unfortunately, the really interesting positions often come in the middle of the game. Here are three of my favourites anyway.
Pin to win, and the knight conveniently covers both squares.
[Event "Oct '06 Banded Threesomes 1500-1700"]
[Site "http://www.redhotpawn.com"]
[Date "2007.01.23"]
[EndDate "2007.01.28"]
[Round "2"]
[White "chessicle"]
[Black "Inspector5251"]
[WhiteRating "1788"]
[BlackRating "1157"]
[WhiteELO "1788"]
[BlackELO "1157"]
[Result "1-0"]
[GameId "3065023"]
1. e4 c5 2. Ng1e2 Nb8c6 3. Nb1c3 e6 4. d4 cxd4 5. Ne2xd4 d6 6. Bf1e2 Ng8f6
7. O-O Bf8e7 8. Bc1e3 O-O 9. f4 d5 10. e5 Nf6d7 11. Be2d3 Nd7c5 12. Bd3xh7 Kg8xh7
13. Qd1h5 Kh7g8 14. Rf1f3 f6 15. exf6 Be7xf6 16. Nd4xc6 bxc6 17. Be3xc5 Rf8e8
18. Ra1d1 Bf6e7 19. Bc5d4 Be7f6 20. Bd4xf6 gxf6 21. Rf3g3 Kg8f8 22. Qh5h8 Kf8e7
23. Rg3g7 Ke7d6 24. Nc3e4 1-0
Trap the rook!
[Event "Clan challenge"]
[Site "http://www.redhotpawn.com"]
[Date "2006.03.19"]
[EndDate "2006.04.16"]
[Round "?"]
[White "frogstomp"]
[Black "chessicle"]
[WhiteRating "1539"]
[BlackRating "1788"]
[WhiteELO "1539"]
[BlackELO "1788"]
[Result "0-1"]
[GameId "1905481"]
1. e4 e5 2. Ng1f3 Nb8c6 3. Bf1b5 a6 4. Bb5xc6 dxc6 5. c3 f6 6. Nf3h4 Bc8e6
7. d4 exd4 8. Qd1xd4 Qd8xd4 9. cxd4 Bf8d6 10. O-O Ng8e7 11. Nb1c3 O-O-O
12. Bc1e3 g5 13. Nh4f3 Ne7g6 14. Nc3e2 h6 15. b3 Rh8e8 16. Ra1c1 Be6g4
17. Kg1h1 Re8xe4 18. Nf3d2 Re4e8 19. Ne2c3 Bg4e6 20. Nd2e4 Bd6e7 21. Ne4c5 Be6f7
22. Nc5e4 f5 23. Ne4c5 f4 24. Be3d2 Rd8xd4 25. Nc5e4 Be7b4 26. f3 Re8xe4
27. Nc3xe4 Bb4xd2 28. Rc1d1 Bd2e3 29. Ne4f6 Rd4xd1 30. Rf1xd1 Ng6e5
31. h3 c5 32. Nf6d5 Bf7xd5 33. Rd1xd5 Be3d4 34. a4 a5 35. Kh1h2 b6
36. Kh2h1 Ne5f7 37. Rd5f5 Nf7d6 38. Rf5f8 Kc8d7 39. Rf8g8 Kd7e7 40. Rg8g6 Nd6f5
41. Rg6c6 Bd4e5 42. Kh1g1 Be5d6 0-1
Nice square for the knight.
[Event "September 2007 Banded Quartets 1600-1800"]
[Site "http://www.redhotpawn.com"]
[Date "2008.07.04"]
[EndDate "2008.07.14"]
[Round "2"]
[White "chessicle"]
[Black "LATITUDE 0"]
[WhiteRating "1788"]
[BlackRating "1731"]
[WhiteELO "1788"]
[BlackELO "1731"]
[Result "1-0"]
[GameId "5179035"]
1. e4 c5 2. Ng1e2 Nb8c6 3. Nb1c3 g6 4. d4 cxd4 5. Ne2xd4 Bf8g7 6. Bc1e3 a6
7. Qd1d2 d6 8. f3 Ng8f6 9. Bf1c4 Nc6xd4 10. Be3xd4 b5 11. Bc4b3 O-O
12. O-O-O Bc8e6 13. h4 Be6xb3 14. axb3 h6 15. h5 Nf6xh5 16. Bd4xg7 Kg8xg7
17. g4 f6 18. gxh5 g5 19. Qd2d5 Qd8d7 20. Nc3e2 Ra8d8 21. Ne2d4 Kg7h7
22. Nd4e6 Rf8e8 23. Qd5f5 Kh7h8 24. e5 fxe5 25. Qf5g6 1-0