Caleb was just an ordinary man, but with great blessings in his life because he believed and obeyed God.  He had faith, he had courage, he wasn't a great man, he wasn't even a prophet, he wasn't even listed in Hebrews specifically, but by extension he certainly was. 

By implication he was a very great man, and there are great women in the BIBLE as well.  And the great men and women in the body of Christ in the church today doing the same thing, learning how to do the same things, facing our own giants, our own Goliaths, our own Anakim in our lives.