OWA is an epic piece of music, it just suffers from extreme overuse. That veni veni venias bassline never fails to get my heart-rate going, though.
That said, Birth of a God is so severely underrated it makes me sad.
Favourite tracks, hmm...can't pick just one. Rufus' Welcoming Ceremony, Anxious Heart, Costa Del Sol, Descendant Of Shinobi, J-E-N-O-V-A, Those Who Fight Further, Those Chosen By The Planet, Opening Bombing Mission, Hurry!, Turk's Theme, Desert Wasteland, Great Warrior, Interrupted By Fireworks, Weapon Assault, WHOLE FUCKING SOUNDTRACK AT THIS RATE.
And if I get started on all the many remixes/VotL/piano collections I'll never stop, so I'll shut up now.