[blagie]

Easiest: Find a random industry. You'll see job openings for programmers. You'll probably be wildly overqualified. Get a job there. Make sure it's a job where you can keep your head up and learn to industry (and not be isolated in a cubicle).

Harder: Nerd out on something not computer science. Take classes in oddball topics. Go to industry conferences. Network and hang out in online forums.

I once hopped on a plane and went to a conference in a 90% unrelated industry that I had taken an interest in. Even gave a workshop there -- as an outsider looking in, around a relevant idea. Expensive, but I learned a ton and came out with a powerful network.

Have fun with it!