The director of Civil Protection recently recovered from a computer crash which has put his Half-Life 2 comedy series on hold, and to tide over his fans while he regroups, he recently shared some production screencaps from his use of the Source SDK tools. All those little shapes and icons… each of those works together in Hammer (the Half-Life 2 map editor) to coordinate elements of a scene, including scripted Faceposer sequences, lights and more. A testament to the Source SDK’s power to intimidate the uninitiated. You can see more of these (and in better resolution) at his blog.

Related: Valve Software’s Source SDK Wiki