The brachialis is the often-overlooked muscle between the biceps and triceps. Training your brachialis is a great way to help "project" a massive arm. Why? Because as the brachialis develops, it pushes your biceps and triceps further away from one another, making for a wider-appearing arm.
The standard hammer-grip curl is good, but I prefer the cross-body variation shown here. Grip the dumbbell as hard as you can throughout the rep.
A lot of lifters think that hardgainers rank right up there with Big Foot and Nessie on the believability scale. Writer Phillip Nation begs to differ. He thinks that true hardgainers exist and, more importantly, can be cured.