Pull exercise. From "The New Rules of Lifting".

Muscle group: Combined

Steps

SETUP: Grab a dumbbell in your left hand (or your right hand if you’re left-handed). Stand with your feet shoulder-width apart, knees slightly bent, and your non-working hand behind your back. Bend forward at the hips as far as you can while keeping the natural arch in your lower back. Hold the dumbbell in a with your palm facing behind you, with your arm straight down from your left shoulder.
LIFTING: Pull up and out to your side, so your upper arm is nearly perpendicular to your torso at the top of the movement. This will make the exercise more of a challenge to your traps and rear shoulders.
LOWERING: Lower the weight along the same path. Finish all your reps, then switch arms and repeat.

All exercises