Yeah, I've never played I Have No Mouth And I Must Scream, but I adore the story, and I think the game adaptation playthrough that I watched was phenomenal. I think I heard that the same team did Darkseed, which is another like "more rewarding to watch than to play" games, but with incredible HR Giger artwork and an oppressive horror atmosphere. The sequel also turns the story into a farce about dunking on how much the main character from the original game sucked, and is fun in its own way while still being appropriately horrifying.

Grim Fandango seems like a good contender for best point and click ever, but a lot of good point and clicks game out of the golden age--Toonstruck is a really good one, if you have a high level of tolerance for the like, Warner Brothers 90s in-house style, like Animaniacs for a slightly more mature audience. And it has tons of Christopher Lloyd, which is always nice.

Oh, and have you heard of a game called Hive's Swap?