My brain hurts from just reading this thread. And I'm not kidding.
C and C++ are both extremely powerful languages (what do you think your favorite operating system was coded in?). You can code just about anything in them. They are two completely different languages, however, and endless arguments about which one is better. Just pick one. There's countless e-books out there, and an almost infinite amount of code to look at.
EDIT: Just found a great post:
http://www.hackthissite.org/forums/viewtopic.php?f=102&p=24301#p19509As far as the other languages mentioned in this thread:
JavaScript is a web scripting language. It's usually used client-side, usually to perform operations on the page without having to reload the entire page. Only useful if you're a web developer, really. AJAX is fun, 'nuff said.
Perl is lately becoming my favorite lang, it's great for just about anything - it used to be extremely common for server-side web scripting, but is also great for just about anything else. It's used a lot as a replacement to shell scripting, and you can make anything from complex exploits to old-school games in it.
Aplha Numeric for algra rythims Can't say I've had any experience in this, but it sounds cool. A quick Google search seems to imply something about skateboards...this could be fun to code in.
PHP is ridiculously popular, due to it's ease-of-use and sheer power. I use it a lot on a daily basis, both for professional work and for personal projects. It's a great language, IMHO.
VBscript and
Delphi - I have never used either (well I've coded a fair bit of VB back in the day) so I'm not gonna comment.