PHP.

It is very easy to understand, and supereasy to write web software with very little knowledge about tje surroundings and with very little setup. It is very well documented, in a central location and in an easy understandable structure. My first programming language.

Perl.

Extremely powerful and simple use and achieve a lot with little work. Once you really know it. Probably the second language I learned (basics - I've not come that far yet because of my lazyness to learn it).

Java.

A language that supports you if you're thinking about your programs in a very structured way. Statically and stringly typed, it enables building great tools that anaylze code to help you in programming and ensuring code quality. The non-freeness of it's most important implementation - Sun's - is probably the reason for the way programs are spread and deployed: a java program usually brings everything it needs apart from the core runtime engine (and for a small bunch of enterprise and web applications a container to run run them in) - which keeps away just about any type of library dependency problem.

Bash.

Simple (in terms of core functionality, not always ease of use) and powerful glue between unix commands - and and other script in whatever language for whatever purpose (from copying a bunch of files and saving a bunch of string to starting an enterprise application server). o dependency problems here, either - you'll know what commands are available.

Python.

Nice syntax - never any more problems anymore with strange indentation. Powerful, easy and simple to use. Still - Stringly typed! But also dynamically. Can do a lot with little code, quickly learned.

Ruby.

Real object oriented version of Perl :) Powerful to create DSL's., web apps and a lot of other things.

Groovy.

Java syntax with some characters less. All the power and functionality of Java with some additional language powers and an enhanced core library that simplifies a bunch of things and saves you some lines.

Lisp, Scheme and stuff.

Only one sort of braces. Seems interesting, but I just didn't get into them yet.