Lost has been a great show, and almost every episode has been really good, but Deus Ex Machina is outstanding. Terry O'Quinn's performance is great, the directing is solid, and the script is dark, manipulative, and creates a real sense of emotion and frustration for Locke and for the audience. The last 5 minutes or so are what prompted me to write this review. The twist where Locke's parents were just using him for his kidney was really dark and something I did not see coming, and the hatch lighting up in the middle of Locke's frustration is probably the most shocking, well directed, and most intense cliffhanger we've had so far. Even the music is great. Overall, Deus Ex Machina is by far my favorite episode of Lost, and is one of my favorite television episodes of all time. I can't wait to see what happens next. 10/10