If you are into Python (I do!) this should be your new homepage: facts.learnpython.org
But it’s a fact, you can’t ignore Ruby. Gems like nokogiri, savon, buby… Metasploit… maybe you heard about it :P.
Long story short, the sooner you learn it, the better.
For a nice introduction, with cool graphics, I would recommend this one: tryruby.org
(it only takes about 1/2 hour to go through!)
So, what are you exactly waiting for? :)