Ok, guess I'll start..
Lateral Dumbbell raises is my favorite exercise, I believe mainly cause it involves less strain on my elbow(broke and had my radial head removed) but it gets my shoulders so round and blood flowing so hard through my arms, get all vascular in my shoulders, bi's and forearms after a set or two.
I thoroughly enjoy sitting on an incline bench with dumbbells and doing (w/both arms at the same time) incline curl into an overhead press... at the top of your over head press do a negative side lateral raise... at which point you stop at shoulder height (palms facing towards the ground) and bring the dumbbells straight out in front of your chest with arms extended and palms now pointed towards the sky... now do the rest of the negative back down to the starting incline curl position...
That set there is my FAVORITE!!! Try it in your routine.. it's awkward at first so don't do a lot of weight. It may feel easy in the beginning but the negatives on that exercise hit hard and quick! :bber: