erlang

I recently started looking into the erlang language. It is a functional language somewhat like lisp, but concurrency is built into the language in a very fundamental way. Has anyone out there worked with erlang before? Any opinions on the language?

>>1
Erlang is awesome. I don't think I'd really consider using any other language for applications requiring significant concurrency or network features. The built-in fault tolerance is absolutely brilliant, especially when combined with Erlang's out-of-the-box distributed scaling functionality.

>>2
Advice: Read SICP. Functional languages are fun.