I just completed To the Moon and I guess I'd say it was enjoyable.  Overall, I liked the story that was told, but I felt that the writing itself was unbelievable most of the time.  There wasn't much to say about the gameplay, as all you did was click on one thing to activate a cutscene and then click on another thing to activate a cutscene, which was fine.  I guess I expected more out of it, but oh well.  It was definitely worth what I paid for it and I'm glad I played it.