Although I love node.js, but you are missing out on not using Ruby. I used both Ruby (eventmachine) and node.js on a recent project and it was a total awesomegasm. I admit that the Ruby side had some Ruby code converted to C for performance reasons (parsing binary blobs), but we are not rubysts because performance is the only thing we care about. I find Ruby incredibly sexy, be it still cool or not.

Yeah I actually did start working on a Rails project a month or so ago.

Ruby is okay. I like how extremely easy it is to pick up. I don't like that this probably leads to similar problems the PHP ecosystem developed eventually.

On the concurrency side of Ruby I've been really enjoying Celluloid recently. Still trying to come up with a project to hack on with it.

Ok, now you are ready for ruby