You can buy DHEA in Wal-Mart for goodness' sake.
I'm on 50mg a day in my general vitamin mix, I think I've heard of people going a little bit kooky on 200mg a day and up.
Short of going on T, heavy weight-bearing exercise, training for mass, is the most masculinizing thing I've experienced. Funny, now that I'm on T my exercise is aimed toward ability, flexibility, and endurance, since my old mass training makes me too friggin huge.