Did I miss this? Or is this news? PC Gamer's top 100 PC Games of all times contains an interactive fiction game at spot 97. And the good news is: it's not Zork. It's not even Trinity or A Mind Forever Voyaging or anything else by Infocom.
It's Anchorhead. And so it should be. Congratulations, Michael Gentry!
My own favourite PC game of all time is at number 8, which shows that the people at PC Games have excellent taste. (Hm.) Half the top ten are RPGs, by the way (including the number 10, Fallout 3, which has been misleadingly labelled as a FPS).