I just find even in these "independent" episodes, which no big thing happened to break down the plot. Ted's innkeeper life change from sexless to sexual. In the mean time, the couple life of R&B makes them from cool guys to the boring people like L&M (in their sight). This contrast as the following episodes, 5th - M&L too close that become one people, 6th - about fight, and finally 8th, the first time of relationship of R&B had stopped by others. Surely we can always enjoys in this story and their narration.
Review of The Sexless Innkeeper
