I work offshore on a streamer boat. We gather seismic data from high-intensity bursts of compressed air that are sent in to the water. The particle movement eventually pops the surface, comes back up, and we gather data on the streamer kajiggers that we tow behind the boat. Varies from boat to boat, but the big Papa-sized Ramforms (Rammies) can tow 12 streamers, about 2.5 miles long apiece. We do this so we can find oil; that's right, we're one of the fuckers who take so much cash to find oil. Between platforms and exploration, you've got where most of the money you pay at the pump go towards improving.
I clean up the data on the boat and assemble it from the most primitive form in to a usable foundation for future processing. We also have clients looking over our shoulders all the while. The job involves five weeks on the boat (12hrs a day, 7 days a week) and five weeks off.
The pay isn't too great, especially for the oil industry (European company. Overtly fucks over US employees on pay. We're talking Europeans making ~3 times what I do for the same job and experience level). I don't look forward to leaving every time (flying to Spain on Sunday, in fact). I see a different group of people almost every single five weeks. Adding insult to injury, the guys who coordinate our travel agenda are fucking retarded. Plus, getting injured on the boats is pretty easy. I fucked up my shoulder (dislocation) and ripped some muscle on the left side of my neck on one trip. I also got attacked by a flying fish a few trips later
I don't like it, but I'll tolerate it. I'm about 1.2yrs in. Once I've got 2yrs under my belt, I am fucking GONE. Better paying job in an office somewhere is starting to sound pretty nice =V I'm a creature of habit, so this entire job is against every fiber of my being.
Oh yeah. The commutes blow dogs for quarters

I'm about 6'3.5", and flying on planes for long periods is hell given my height. My Africa and Australia commutes involved ~25hrs of flight time. I have about 12-13 total hours of flight to get to my Spain rotation, and I see that as a SHORT COMMUTE. How sad is that?
Jam it back in, in the dark.