A great set of languages. It's true that languages should be mind-expanding, and for that reason I wish C would be included on principle --- everyone should understand pointers --- but I suppose most people have already seen that (the assembler included may make up for it, too).

I'm rather happy that many of these are "modern" languages: Qi, Oz, Kernel, and similar raise my hopes for the field showing that in the interceding 50 years, we have improved upon Lisp, ML, Prolog, and the like.