I've gone to take the poll at the the Curve (you can get your entry in by Tuesday the 23rd) for the 50 greatest characters from DC Comics.

Here were my votes:
(the links will take you to their Wiki entries):

1. Batman
2. Superman
3. Wonder Woman
4. Barbara Gordon
5. Donna Troy
6. Dick Grayson
7. Ra's Al Ghul
8. Joker
9. Jack Knight - Starman
10.Catwoman
11. Joker's Daughter (Duela Dent)
12. Tim Hunter
13. Black Canary
14. Captain Marvel
15. Death of the Endless
16. Lois Lane
17. Kara Zor-El
18. Mary Marvel
19. Huntress (Helena Wayne)
20. Jimmy Olsen (Mr. Action/Elastic Lad/etc.)
21. Elongated Man
22. Koriand'r (Starfire)
23. Terra
24. Raven
25. Amethyst
26. Superwoman (Kristin Wells)
27. Isis
28. Booster Gold
29. Kyle Rayner
30. Wally West
31. Amanda Waller
32. Baron Winter
33. Morpheus of the Endless
34. Zatanna
35. Captain Boomerang (Digger)
36. Harley Quinn
37. Kamandi
38. Arion
39. Cain
40. Insect Queen (Lana Lang)
41. Doctor Light (Kimiyo Hoshi)
42. Liberty Belle
43. Rose Forrest/Thorn
44. Fire/Green Flame (Beatriz)
45. Harbinger
46. Night Girl
47. Polar Boy
48. Captain Carrot
49. Ambush Bug
50. Composite Superman