Tough one, but I'd have to say - in no particular order:
Moses - because he had a close relationship with GOD than any other man, except Jesus.
Job - because he got to reason with GOD
Joseph (Mary's husband) - kind of an odd choice, I know, and you don't hear much about him. However, he had to be a man of tremendous faith to take Mary as his wife under the circumstances and then raise Jesus as his own child and teach him his craft. He's one of the people in the bible who is really shortchanged, in my opinion, with respect to having his story told.
(And is I can have an honorable mention, I'd toss in Joseph, the son of Israel. When his own brothers sold him into slaveryy and told his father he was dead, he had no idea that GOD allowed those events to occur so that he could become a great man, and the savior of his people, but that's exactly what happened. Oddly enough, I also just included him in a hub I built on inspirational Bible passages.)