If you haven't played the Stanley Parable you should leave the thread now, as the whole experience resides on going in blind.
I'm pretty sure I've exhausted all options in The Stanley Parable, but it definitely sticks out as one of the most clever games I have ever played.
Obviously it's not for everybody, but playing this right after playing "Beyond: Two Souls" is perfect, as the game does such a great job of deconstructing that method of storytelling and simultaneously being the exact same thing. There is no reason to Stanley Parable, all options will great you with a restart in the same office.
What makes you want to keep playing is the humor and the dynamic narration, which is absolutely brilliant, and the subtle shifts in the physical geography that are actually quite subtle and easy to miss. For a game about the banality of choice, the actual choices and outcomes are so wildly different that after I had exhausted my options I played through some of my favorites a second time just to see the brilliantly constructed humorous moments again.
Immediately I wanted to come discuss it, but there are unfortunately few discussions on the game that I can find. Did I really exhaust all the options? Really I'm just depressed that there may not be more to see, but I'd like to hear everyone else's experiences with the game, it's definitely in my top 10 for GOTY.