Wonderfully written article, but especially delighted to see extensive mention of DF2: Jedi Knight. This game absolutely dominated mine and friends free time for multiple years, both single player and multiplayer. Up there as one of my favourite of all time, certainly most played.
Lucasarts absolutely ruled on the story based games genre merges. See of course all the point and clicks such as Monkey Island and Day of the Tentacle, but also of course XWing and Tie Fighter.