My favourite heads are Medic Mantis (drops from Geary and The Warrior) and Bone Blinder (from Vermivorous the Invincible).
Use either with Bandit War Paint skin (Rank 3 "Marauder? I Hardly Know 'Er" challenge) and you get a really awesome Fallout-looking character. :D --- >X< Leader of The Dream Team >X< "A game moves pretty fast. If you don't stop and teabag once in a while, you could miss it."
I'm liking Rougish Renegade with Gruff Around the Edges so far. Sticking to Jakobs guns to theme him around the Hammerlock DLC when I finally get done with the main story. --- "This is all me. This is ALL ME!" Video play throughs at - http://www.youtube.com/user/DreadArkive