Hi,
You could always do a quick Google search and see what comes up. To save you time though and out of pure curiosity I done the same thing myself and had a quick browse through the first article that came up
Hot 2013 IT Skills
Personally speaking everyone has their own preference when it comes to dev and all languages have their own positives and negatives.
Short term, have a dig in to each and see if anything grabs your attention and then run with it.
Long Term you'll be able to pick up new languages without too much hassle. Once you have a strong understanding of the fundamentals along with some of the more popular design patterns you can pick anything up with a little work, google searching and asking questions on here.
Cheers,