I like ZIL, in part to be contrarian, but it actually is an interesting language, both because it is based on a subset of the 1970s Lisp-related language MDL, a

I like ZIL, in part to be contrarian, but it actually is an interesting language, both because it is based on a subset of the 1970s Lisp-related language MDL, and because it is the language the Infocom implementors used historically, and these days you can even find the actual ZIL source code to Infocom games and even a few unreleased ones in various stages of completion.