This is why in most cases I cringe when I hear a director utter those fatal words "Less Feeling". Of course that type of direction has it's place on medical and technical reads but, in my opinion, it's an overused direction. Give your narration a little boost. Let the talent throw a little of themselves into it. I find that when there is a little give and take from both ends of the session that the read always turns out better.
When voice talent Jim France is in town he comes into SunSpots Asheville and he and I are usually given free range on the direction of his voicing for "Dangerous Game" which is a big game safari hunting show that airs on Versus. This makes a subject that I usually wouldn't be interested in fun and, well... interesting.
My two cents.