Well, unless it's a Farsi-Hebrew dictionary, I guess most apps could use some translating. 😛 One of the things I liked about OS X when I switched was the quality of its "small" software, and maybe some translations would help to spread its use, now the user base is growing in size...
I'm gonna do the cocoalocalizers thing, thanks, kainjow.
Anyway, if you read this and are interested, feel free to PM me.
I'm available for:
French <-> Spanish
English -> French
English -> Spanish