Mad Men: Episode 5, "5G"
Damn this was a good episode. Don's past comes to the forefront once again. With his step Brother Adam showing up and calling him by his real name. The ending to this episode was tense as hell. The way it was shot, and edited made it seem like Don was going to pull out a gun and shoot Adam, erasing all traces to his past. But he does something else, much more generous. Showing he still cares for Adam. Damn good episode nonetheless.