If you do not, what would you love to work on.
If you do, what are you working on?
It can be hacking related or anything else.
What languages do those industries use?
I'm actually doing this now -- writing interpreters for DSLs using Clojure at my current job at Health Market Science. Even though it blends in with all the other companies as another lame Java shop, I have actually had the opportunity to work on very interesting problems, and I have had enough freedom to use cutting-edge tools. I even prototyped a JRuby on Rails frontend that called into one of my interpreters written in Clojure. For some reason, I have always loved writing interpreters.
I've done a lot of 3D graphics and I think working on the inverse could be fun too. I think a lot of progress is going to be made quickly now that 3D depth-sensing cameras are becoming available. Most interesting to me are self-driving cars (e.g. the DARPA Grand Challenge robots) or dynamically balancing 2-legged anthropomorphic robots (e.g. Honda's ASIMO).
I don't know anyone in the field, so if I was really going to pursue this I'd probably start by going back to school.
Also, I'm designing a programming language. But these days, who isn't?
I think we could improve safety a lot with modern glass displays. For example, we have the weather report from XM, and we have the pilot's flight plan on computer. Why not warn them if this flight would be dangerous (or dangerous for their experience level).
* In terms of intensity: not frequency and maybe not averaged. The idea of being able to fix the software I use makes it more bearable, even if I rarely take advantage of that.
Seriously though, seems like this question gets asked about every two weeks around here.
I love flying airplanes. From the first time I sat in a cockpit I knew that I would rather fly than anything else. But I also knew that making a career out of flying would be the worst thing in the world to do. Why? Because sooner or later it becomes a job, just like all other jobs. And when your passion becomes mundane and tiresome, you lose something. Wouldn't it be better to cultivate more things you love instead of just having one and beating it to death?
I've found that motivation comes after action, not before. That means that loving something in the abstract is usually much more fulfilling than the concrete. I've also found that once you pour yourself into something, the love will naturally come. Lots of folks wait around for some kind of epiphany when what they really need is the gumption to go out and start something.
I'd love to do more Lisp, or in another universe, I'd love to work on engines and wish that I knew more about their design, power, efficiency...
If you'd asked me a few years ago, the job I described then would be almost indistinguishable to the job I have now. But I don't enjoy it and feel:
a) I know this is a good job and I ought to be able to love it, there's something wrong with me.
b) If I feel this way about this, wouldn't I feel the same about any other job that seems good now, if I did get to do it?
c) Guilty that this is a good job and I'm not making the most of the great opportunities it's giving me.
I fear the kind of ant-in-a-massive-system job, such as "Legal Department E-mail Archive Storage Administrator" and I love the idea of "Independantly Wealthy Research Lab Owner" where I get to be involved in a lot of different things at a high level.
It's something of a dying art form, as most print-based things are, but also seem to have resurged in many ways, especially as movie properties. I'm eagerly waiting to see whether or not TakeComics succeeds as becoming the iTunes of comic books, and whether or not it spawns any cottage industries or ideas as a result.
I also perhaps misspoke when I stated that comics are dying. I don't honestly know that they are, or what their current sales numbers are -- I just expect for print-related content in almost all forms to eventually die, or become more niche, which may well be naive of me.
Games industry (but only the kind I like)
I have worked on business systems in many companies (mostly enterprise) and learned quite a bit. But the biggest thing I learned is that companies rarely have the applications software that they really need to compete.
I am building an environment and applications that I wish I would have had all those years. This is a great opportunity to put into software all the things that could have been along with all the things that were.
It's hard not to love working on what you really want.