A good third language?

Okay, my main two languages are Ruby and C++. Although I've learned Ada out of school and I'm learning Scheme in school now, I don't consider them languages I'm generally GOOD with. So I'm wondering what third language I could learn to balance myself out.

>>47
This is coming from my limited C++ at work....

Sometimes what happens is that two different programmers will use templates on two different compilers. The final result is that when the code gets merged, the shit just breaks.

Well, yes, C has the same problem. However, C++ seems to take this to the next level.