Garbage Collection

I'm a programming newfag, and I was wondering if anyone can explain to me what garbage collection is and which languages are doinitrite or not.

Anyone?

First of all, this is not /b/, so no newfag-ging.
Secondly, LISP is doing it, uhm, ``rite'', because it's simple in LISP and you can't screw it up.
Thirdly, http://en.wikipedia.org/wiki/Garbage_collection_(computer_science)