This isn't really about your opinion on game design, but on games themselves, although I will be using the answers I get as input data for a potential game-design project.
What games do you think aren't as good AS A GAME as their commercial popularity would indicate, and, conversely, what games do you think are better AS GAMES than their commercial popularity would indicate? Since it's hard to define criteria (other than commercial popularity, i.e., copies of the game (or its equipment) sold) for how good a game is, please explain how you made your evaluation(s). I'd like more emphasis on board games (e.g., chess, checkers, pachisi, snakes-and-ladders, goose, Monopoly, Scrabble, etc.) than on other styles (cards, dice, etc.), but comments on those other styles will be welcome as well, as such comments may provide additional insight into what people think makes a game "good" or "bad".