Escapist Character: Hank. Seriously, a womanizing, hard-drinking, successful writer who somehow always comes out on top? This is a male writer's fantasy life.
Fanon Discontinuity: Many fans believe that the season 4 finale should have been the show's final episode. These fans view seasons 5-7 as non-canonical.
The third episode features a porn star who asks Hank if she should get breast implants, even though he points out that her breasts are fantastic. The character was played by actual porn star Brooke Banner, who though famous for her natural breasts, went on to get implants a few years later.
A season 5 episode features a cop who jokes about having shot a black kid whom he thought was carrying a gun, which was actually an iPod Touch. After the shooting death of Tamir Rice (and other high profile cases of Police Brutality targeting unarmed black men)... not so funny anymore.
Ho Yay: Hank and Charlie have some discussion of this in season three, although it never gets past the comfortable joking around stage.
They do cross into that territory a lot though, such as Charlie complementing Hank's penis size.
Richard Bates and Hank. Although Hank doesn't really reciprocate, he doesn't protest (not even when Bates kissed him in season 6) because he finds Bates so amusing.
Nightmare Fuel: The opening scene of the season 5 finale. Hank is seen drinking in a bar, served by Lew Ashby, heavily implied to be hell.
Seasonal Rot: The opinion of a few fans and critics. Generally seen as occurring after the first 3 seasons or so, when the characters started to suffer more from turning more into caricatures.
Tear Jerker: Could also double as Heartwarming Moments. In the season 2 finale, the opening scene as Hank finishes typing his manuscript with Warren Zevon on the stereo Ashby appears, converses briefly, then says "It's true what they say. Got a hell of a band." Then he disappears and we find out he did OD.
The Scrappy: Season 4 has seen a marked downturn in the ability of the audience to tolerate Becca's whining, monotone and flat character and an annoying subplot involving a bunch of just as annoying try-hard 'bad chicks' and their garage band.
The Woobie: Oh Becca, why can't you find a Nice Guy to have a sweet, non-overly sexual, first/second relationship with?
Charlie can sometimes be this when he's not being a plain Butt-Monkey (although he does have a tendency to bring his misfortunes on himself).
Win Back the Crowd: After poorly recepted One Hot Minute, no one expected anything from two 40-year-old junkies, one half-dead guitarist, and... Chad. Even the band itself did not strive to make some kind of super-cool album, but simply to get everyone together and play the music that they really like. What a thrill they must felt when this became not just a great comeback, but also their most successful album ever!
(and other high profile cases of Police Brutality targeting unarmed black men)... not so funny anymore.