I first heard of Nana Mizuki in my favourite Anime Basilisk were she dubs Iga-no Oboro and sings the two endings, In fact, one of the reasons for wich I saw Nanoha is because I herd that Nana Mizuki subed Fate, yes, I'm his fan and I love her songs too
Too bad she's not know here in Mexico, 99% hard to find her songs.
EDIT: Question, who dubs Vita?