I've done it a couple of times, but this is the only one I can recall. I was somewhat jubilant, I believe. Of course, I would have taken the rook, first...
[Event "Challenge"]
[Site "http://www.redhotpawn.com"]
[Date "2005.06.08"]
[EndDate "2005.06.16"]
[Round "?"]
[White "chessicle"]
[Black "Chufty Jones"]
[WhiteRating "1735"]
[BlackRating "1505"]
[WhiteElo "1735"]
[BlackElo "1505"]
[Result "1-0"]
[GameId "1199795"]
1. d4 Ng8f6 2. c4 e6 3. Ng1f3 Bf8b4 4. Nb1c3 O-O 5. e3 d5 6. Bf1d3 Bb4xc3 7. bxc3 Bc8d7 8. O-O Nf6e4 9. Qd1c2 f5 10. Bc1a3 Rf8f7 11. Nf3e5 Rf7f6 12. f3 Ne4d6 13. Ra1b1 b6 14. e4 dxe4 15. fxe4 fxe4 16. Bd3xe4 Nd6xe4 17. Qc2xe4 Rf6xf1 18. Rb1xf1 Nb8a6 19. Rf1f8 Qd8xf8 20. Ba3xf8 Ra8xf8 21. Ne5xd7 Rf8d8 22. Qe4xe6 Kg8h8 23. Nd7e5 c5 24. Ne5f7 1-0