It’s a bit late, since it was shown September last year, but I think too few people mention it and it should be known :). Last September 2007, the show Daitan Map aired a special about the top 50 most popular anime character voices from the very first anime to the recent. I think it is special in a way because it not only showcased the wonderful seiyuu who were behind the entertaining voices but it also gave previews of old anime that were forgotten and needed to be remembered by the present generation (Come on, don’t tell me you don’t remember any of those anime mentioned :P).

You can watch the clip (quite long) in Veoh or Crunchyroll (needs registration). Just search the terms in the title of this article and you should get there. In the meantime, here are the list mentioned in the clip (names romanized by me). The numbering is from 50 to 1 :). Please click the names if you want to know more about the seiyuu (e.g. other roles).

50. Giant (Doraemon) - Kimura Subaru
49. Piccolo (Dragonball) - Furukawa Toshio
48. Amuro Ray (Kidou Senshi Gundam) - Furuya Toru
47. Ikkyuu-san (Ikkyuu-san) - Fujita Toshiko **
46. Ozora Tsubasa (Captain Tsubasa) - Hibino Akira
45. Sakura Ojiisan (Chibi Maruko-chan) - Aono Takeshi
44. Mei (Tonari no Totoro) - Sakamoto Chika
43. Porco Rosso (Porco Rosso) - Moriyama Shuuichirou
42. Pyon-kichi (Dokonjo Gaeru) - Chijimatsu Sachiko **
41. Daimaou (Hakushon Daimaou) - Oohira Tooru
40. Shizuka-chan (Doraemon) - Kakazu Yumi
39. Doronjo (Yatterman) - Ohara Noriko
38. Akko (Himitsu no Akko-chan) - Ohta Yoshiko
37. Tony Tony Chopper (One Piece) - Otani Ikue **
36. Suzumiya Haruhi (Suzumiya Haruhi no Yuutsu) - Hirano Aya
35. Roronoa Zoro (One Piece) - Nakai Kazuya *
34. Nobi Nobita (Doraemon) - Oohara Megumi
33. Yumehara Nozomi (Yes! Precure 5) - Sanpei Yuko
32. Norimaki Arale (Dr. Slump) - Koyama Mami *
31. Kanzou Hattori (Ninja Hattori-kun) - Hori Junko
30. Atom (Astroboy) - Shimizu Mari
29. Hoshi Hyuuma (Kyoujin no Hoshi) - Furuya Tohru
28. Kenshirou (Hokuto no Ken) - Kamiya Akira
27. Dai-Totoro (Tonari no Totoro) - Takagi Hitoshi
26. Baikinman (Soreike! Anpanman) - Nakao Ryusei
25. Ishikawa Goemon (Lupin III) - Otsuka Chikao **
24. Inspector Zenigata (Lupin III) - Naya Goro
23. Nausicaa (Nausicaa - Valley of the Wind) - Shimamoto Sumi
22. Monkey D. Luffy (One Piece) - Tanaka Mayumi
21. Char Aznable (Kidou Senshi Gundam) - Ikeda Shuichi
20. Heidi (Alps no Shoujo Heidi) - Sugiyama Kazuko
19. Jigen Daisuke (Lupin III) - Kobayashi Kiyoshi *
18. Kitaro (Gegege no Kitaro) - Nozawa Masako
17. Tsukishima Kirari (Kirarin Revolution) - Kusumi Koharu (Morning Musume) 16. Keroro (Keroro Gunzo) - Watanabe Kumiko **
15. Mine Fujiko (Lupin III) - Nikaido Yukiko
14. Uzumaki Naruto (Naruto) - Takeuchi Junko
13. Satoshi (Pokemon) - Matsumoto Rika
12. Sazae (Sazae-san) - Katou Midori **
11. Kitaro’s Father (Gegege no Kitarou) - Tanonaka Isamu *
10. Anpanman (Soreike! Anpanman) - Toda Keiko *
09. Arsene Lupin (Lupin III) - Yamada Yasuo
08. Pikachu (Pokemon) - Otani Ikue **
07. Asakura Minami (Touch) - Hidaka Noriko
06. Maetel (Galazy Express 999) - Ikeda Masako **
05. Son Goku (Dragonball Z) - Nozawa Masako
04. Momoko “Maruko” Sakura (Chibi Maruko-chan) - TARAKO **
03. Shin-chan (Crayon Shin-chan) - Yajima Akiko
02. Edogawa Conan (Meitantei Conan) - Takayama Minami (TWO-MIX) **
01. Doraemon (Doraemon) - Mizuta Wasabi

Legend:

* - only had an image or voice message as opposed to a video clip with personal appearance.
** - had no image or voice message at all