I spent some time this year using Common Lisp. It's expanding my mind and I see all sorts of alternate histories. I'm starting to feel very curious about SmallTalk for that same reason.

There have been a lot of attempts to revitalize Lisp. Clojure is the one that comes to mind, and I do like that language. My personal take CL simply has a marketing problem. The name sounds so stale and boring that I never thought to pick it up. "Common" may have been a word that invoked unity in a fractured ecosystem at some point in time, but today it communicates "Nothing Special".