Which language to learn?

I know that this has to be a quite frequently asked question, but a group only gets more valuable members by helping people who want to learn. Currently I'm sort of proficient with DOS commands. Obviously you cannot create a complicated graphical program out of DOS. I've heard all over this board that Python sucks, which ironically is the one language most of my friends recommended learning. What language can I learn that is actually useful?

I come to /prog/ for you guys are the only assholes on the internet that will bash other languages if they do suck. Forums have to be 'unbiased' and 'neutral'.

OP, learning new languages isn't hard once you know a few. The only hard parts is learning new programming paradigms, not new languages. The main programming paradigms you'll encounter are imperative languages(C, SEPPLES, Java), functional languages(Scheme, Haskell, ML), object oriented languages(Java, C#), meta-programming(possible in some languages through extensions, while others support it natively), declarative programming, logic programming and others. Some languages are multi-paradigm and allow you to use any given style(CL).