Found through Reddit. Seems interesting despite being not easy, "Scala Parallel Collections", by Aleksandar Prokopec, slides: http://days2011.scala-lang.org/sites/days2011/files/29.%20Parallel%20Collections.pdf
And video (100 MB): http://days2011.scala-lang.org/sites/days2011/video4/29.%20Parallel%20Collections.mp4 (The part about "word count" is not easy, it was explained elsewhere by I think Martin Odersky himself. There is a bit of math behind it.) Bye, bearophile
