38. "The Gang Misses the Boat"
Charlie and Dee have a legit moment here, beyond their shared realization of a beakless chicken sandwich, and the episode's worth watching for that reason alone. Of course, there's also a mesh-shirt-wearing Mac, Dennis attempting to sell his submerged SUV, and Frank dressed as a man-cheetah, so you can't go wrong either way.
37. "Frank's Pretty Woman"
The dawn of Fat Mac sees him tearing into a garbage bag of chimichangas with Dennis and popping insulin shots without a care. It also sees the resurgence of Dennis's sweet, sweet crack addiction, as well as Charlie's "Dallas Oil Man" character, and that horrific limo ride reinforces the series' absurdist DNA.
36. "How Mac Got Fat"
This is actually a Frankenstein's monster of clips from a previously unaired episode, but who cares? The visual of a glue-huffing Charlie doing a private dance for a glue-huffing, chemical-peeled Dennis in the Paddy's back office is something we all needed to see, no matter how it came up.