I think girls like a physique sort of like Nate Green's the most (though he is short I think):

Doesn't scream "drug abuser," but still has good size. Doesn't seem like a fat slob; looks fairly athletic. Would still probably get the "too big" cry from some.
Narrow waist, wide shoulders, round ass, good proportion. Decent condition, but not freaky. This is what they want imo.