Good list of games, but...
- Sam and Max is cheating because it was conceived during the Golden Age. (One of my all-time favorites).
- Plants vs. Zombies is great game, but doesn't do much to broaden my horizons. And it definitely has a focus on fighting. That said, one of my all-time favorite games is the original XCOM. You really had to think hard to play that game. Had great atmosphere as well.
- Machinarium...okay, it's a great game and currently installed on my machine.
- Minecraft: also a good game that's doing something innovative.
However! None of these games (as far as I know) appeal to a big mainstream audience. I really doubt we'll see Zynga, Blizzard or EA doing anything like these games in the near future. Maybe EA would.
But I'm glad to know that I'm not in a camp of one. :)