I was in bed last night thinking about career changes and I got to thinking how cool it would be to spend time in certain industries and learn about how the backroom operations work etc. just for curiosities sake. One such job I thought of would be in the postal service, how quickly can things get transported, how much do they work overnight, how does everything get round properly etc? Would be pretty rad to know the inner workings. I guess that's why I like documentaries based on anything, because you get to learn the insides of operations. Any other ideas for neato jobs like this?