I've wanted to play Dear Esther for so long. I have NO idea what it's about other than you're alone in an island with no soundtrack or guns, etc. Just you and the open field. Love the idea!
As a critical piece in the "Games as Art" movement/feud/war, Dear Esther is certainly polarizing, but I am of the opinion that it should be experienced with a certain amount of Shoshin because enjoying it might require a bit of unlearning.
We had a wander over the weekend, it was surprisingly good as a joint adventure and I'd definitely recommend going through it with at least one like-minded person.
Hope you enjoy it!