I've played and finished 45 of the games on the list. Dang. I hoped to have at least 50%. I plan to play 37 of the remaining ones, but how long it will be is anyone's guess.
There are five that I don't think I'll ever play: Amnesia and Penumbra because I don't think I can handle them. Infocom's adventures because I don't like the ones I've tried. Black Mirror has received far too much bad criticism. And finally Gold Rush just doesn't seem like a fun game, I don't think it has aged well.
I'm actually in the middle of nine of the games on the list and I hope to finish them all some day. And then there's four that I haven't really looked into yet. But since they're in the top 100 I suppose I should get around to it!
Edit: As a last note, I've played 9 of the top 10 ones. Only The Last Express left now. I really should get around to that!