Via Recomendo, we have A Periodic Table of Visualization Methods.
Apropos of nothing:
I once sat across a breakfast table from a military bomb technician for two mornings in a row at the Black Dog Inn in Estes Park. Though he was military, he'd been contracted out to the Secret Service. The B&B was a nice break for him, he said, because he usually stayed in 4-star hotels doing security for VIPs. He stayed in their rooms the night before they did, and spent that night going over every square inch, making sure it was safe.
The second morning, he came down to breakfast in a t-shirt that said "BOMB SQUAD" on the front, and on the back, "If you see me running, try to keep up."