I came across this really cool cnc machining video on PracticalMachinist.com.
There are some great shots taken with a GoPro camera mounted in a tool holder. There are interior machining shots, footage of the inside of the tool magazine, and all sorts of stuff a machine shop geek would love. I should point out that I had nothing to do with this video; it was shot in a large CNC shop in the Portland area. It looks like they do some great work!