I'd recommend this informal intro into Erlang. Was quite nice for me till the moment author got into building Finite State Automata upon OTP. The examples in that section were brain-melting and I definitely lost the thread of author's thought (either none or massive bunch were present there at the moment). Some of the pictures have quite nice humorous messages encoded in the alt, so hovering them relaxes you a bit here and there. Nice idea.
And another trend worth checking. This of course is a gross oversimplification but the direction is more or less clear. Scala is not a programming language for Google, it's the theatre or something, so no Scala trend for you in there.
P.S. I have some extra links into realm of Erlang so stay tuned if you're interested.