They say you don't know someone until you work with them. Let's go ahead and take it a step further and add eat, sleep, and live, because on the road you get to know your fellow co-workers more than in most professions. While sometimes tempers flare, the commoradie on a crew can only be compared to a professional sports team, and being on the road for 80+ shows a year, it's amazing that I can still stand these guys, much less love them like family.
Up until 2 years ago, I approached photography with a very 'clean' approach. If I shot a monument, I would wait for every person to leave the frame before grabbing the 'perfect' shot. Now, after spending more time practicing as a street photographer, I've come to learn what makes a shot genuine is the people, not the monument behind them.
Sunglasses, bad security, and jumping helps too. :)