Scoobi, a DSL to make Hadoop easy. Ben Lever
Scoobi is an embedded DSL in Scala that makes writing Hadoop MapReduce applications far more productive. I'll give a world-wind tour of Hadoop, then dive into how you use Scoobi to write "big data" applications, and finally give a peak under the hood and walk through some of the interesting Scala features it uses
Guerilla Guide to Functional Programming Jed Wesley-Smith
Shameless re-hash of Runar's most excellent introduction to pure functional programming.
Programming Without Null Karl Roberts
Evolution of an algorithm.
Who needs an IDE? Brian McKenna
A 5 minute demo of ENSIME - writing Scala with just Emacs: https://github.com/aemoncannon/ensime