Here's something that happens rather frequently in Japan. Without explaining Japanese culture, the options each person had available, appropriate train/subway behavior, etc., etc., I'm interested in knowing what you'd do if you were the guy who got hit.
http://www.veoh.com/videos/v8026199Yex3N5C3
Also, from around 6:30 AM to 9:00 AM and 6:00 PM until the last train at around midnight, many train/subway lines are crowded to around 150% of capacity. If you think being in a traffic jam is bad, then please switch places with me. I would love to be in my own car, listening to my own music, sitting in a comfy seat, drinking a cup of coffee, etc., than being pressed next to Mr. Japanese Salaryman who reeks of cheap shochu, natto, stale cigarettes, canned coffee, and Mandom aftershave - oh, and he's picking his nose/looking at what came out and his shoulders look like a Bing Crosby Christmas (i.e., covered with dandruff).