iKotomi
[10] Knight
A dub for Clannad would have been tragic, since not even the Japanese can copy Mamiko Noto's voice (Kotomi). If they tried to copy it in English (dubs have in general been doing a lot better and avoiding this), it would have failed horribly, and if they had someone actually do it well, you just lose that much. Of course, Clannad isn't just Kotomi, but nobody else could fit that role so perfectly.