I love the discussion of Scala's influences and milieu. Concerning the sentences:
"Other languages that have integrated some elements of functional programming into OOP include Ruby, Smalltalk, and Python. On the Java platform, Pizza, Nice, and Multi-Java have all extended a Java-like core with functional ideas. There are also primarily functional languages that have acquired an object system; examples are OCaml, F#, and PLT-Scheme."
I should think that JavaScript deserves some place in this list. It has first-class functions and closures in a prototype-based object environment.
I know nothing at all about CLOS and its competitors, but doesn't Common Lisp deserve some mention in the list of functional languages to acquire OOP?