A friend of mine does bent over rows to the waist, then to the neck.
He does 10 reps per set, (5 to the waist 5 to the neck) i.e. one to the waist then to the neck then to the neck then to waist till all 10 reps are done. He does 5 sets, and says it's like doing 5 sets of 5 for the upper and mid part of the back.
Is this a good way of working the upper back as I've never seen anyone else use this technique?