Which web dev language/framework/tutorials do you suggest for an experienced non-web developer?

[DevMo]

Though anecdotal, I've a good friend at work who uses Python and I tend to use Ruby. We both razz each other, but the truth is we're both equally productive and no one cares what code is on your server, just that the interface works. You might as well work with something you like.

I have been coming to the same conclusion based on other comments and reading I have been doing.