My current rating is 1394 (I know, I suck) and I just won a game in blitz with a player rated 1933 (I played whites):

[Event "RHP Blitz rated"] [Site "www.redhotpawn.com"] [Date "2009.2.19"] [Round "?"] [White "Pawn Rebellion"] [Black "ppowell"] [Result "1-0"] 1. e2-e4 e7-e5 2. Ng1-f3 Nb8-c6 3. Bf1-b5 d7-d6 4. d2-d4 e5xd4 5. Nf3xd4 Bc8-d7 6. Nb1-c3 a7-a6 7. Bb5xc6 b7xc6 8. Bc1-f4 Ng8-e7 9. O-O Ne7-g6 10. Bf4-d2 Bf8-e7 11. Nd4-f5 Bd7xf5 12. e4xf5 Ng6-e5 13. Rf1-e1 O-O 14. Bd2-f4 Be7-f6 15. Nc3-e4 Rf8-e8 16. Ne4xf6 Qd8xf6 17. Bf4xe5 Re8xe5 18. Re1xe5 Qf6xe5 19. Qd1-d3 Qe5xb2 20. Ra1-e1 Qb2-f6 21. Qd3-e4 h7-h6 22. Qe4xc6 Ra8-b8 23. Qc6xc7 Rb8-b2 24. Qc7-c8 Kg8-h7 25. h2-h3 Rb2xa2 26. Re1-e8 g7-g5 27. f5xg6 Kh7xg6 28. Qc8-g4 1-0

The diffence in ratings: 539 points. Any other examples?