I've played a few hours of TIS-100 (Jeff is super late to the party). There's a line between "this is a fun intellectual puzzle" and "this is actually just work" and TIS-100 crosses that line for me. I really enjoyed SpaceChem and Infinifactory (the two Zachtronics games that preceded TIS-100) and they are on the good side of the line. Very enjoyable puzzle games, and vastly better than any of the games mentioned in the article.