I got 3 1/2 episodes of LOST watched. I could have finished the fourth one if I hadn't had to go back to listen to the audio commentary on episode 1.
It's marvelous reliving all of the twists and surprises of Season 4, in my opinion the best season since the first season. And even though I know the twists and turns, the episodes are still loads of fun to see again, and many more things register the second time around, of course, since the shows are so densely packed with information.