If you've seen footage of Dr. Manhattan, the glowing, atomic superhero who plays a major role in Zack Snyder's Watchmen movie, you've probably thought to yourself, "How do they do that?" Or maybe you didn't. Maybe you know everything there is to know about special effects, and I'm a big stupidhead. Well, I may be a big stupidhead, but I don't think I'm alone in being curious about how they made the glow from a computer-generated character appear on the real-life characters he was interacting with. Luckily, this stupidhead need wonder no longer!