Writing about web page http://www.cpan.org
Make no mistake, perl is a hideous swamp-creature of a language. But CPAN is just the absolute shiznit when it comes to package download and installation. Forget all this JAR file dependency nonsense, just pick any arbitrary programming task, dig about a bit on search.cpan.org to find the appropriate package (someone, somewhere, will have already written it) and do 'install Package::WhatIWant' .
With the possible exception of Crypt::* on the mac (it doesn't seem to be able to compile stuff for darwin), it just works every time. I wish java had something 1/20th as easy and reliable as this.