[rickr]

Learning a functional language (and way of thinking) was pretty enlightening to me.

I've also been looking into learning a bit about machine learning and data science via https://www.kaggle.com/. They run contests with some very interesting problems.

I don't know if these are the next 'big things' but i certainly don't regret learning them.

[bbcbasic]

Me too. I found advanced C# expression shenanigans very confusing. Then I learned Haskell. Now I see the C# but think the Haskell and it is a lot easier to deal with even the most hardcore expression jujitsu that I see in the codebase.

And that is just one example.