A decent episode. I think my problem with it was that the concept of a life without sleep really intrigued me, but it led to just another "marital difficulty" storyline. They probably didn't intend to tackle the issue seriously, but it just opened up some interesting ideas to me and I didn't feel satisfied with how they used them. Surely there's some other disadvantage to the drug than the roundabout turn of events that led to Stan and Francine spending less time with each other, and I think that would've made for a more interesting story.