Getting back into /prog/ramming

I used to spend all my time studying /prog/ramming languages and writing code.
Lately I've been focusing on CS research instead.
I want to get back into programming.
How should I do it?
What languages should I learn, if any?
I'm already fluent in C, Java, and Perl, and have studied a range of other languages in the past.

programming != ramming /prog/