When I started using Ruby and Rails in 2004 I immediately knew that Rails is going to be huge. At that time I was working mostly with Java.
Ruby and Rails brought so much joy to my programming world that it was kind of a revolution in my programming passion. This revolution is still going on, I'm still happy with Ruby and Rails even if I sometimes criticize some aspects of it.
There is however a new thing that triggered a new (r)evolution in my programming world.
This thing is called CoffeeScript.
The code written in Coffee is so pretty that it almost allows you to think at new levels of abstraction. Yes, it's that huge to me.
I still love Ruby, but CoffeeScript is officially becoming my new passion, equal to Ruby. If you haven't given it a try, then you should. It's so worth it.