Futurama Volume Two
Most sitcoms are character-based, striking the sparks of humor by rubbing odd characters against one another and against odd situations. Humor is strengthened by the uniqueness of the characters: Peggy Hill gets herself into situations that her husband Hank never would, and vice-versa; Homer Simpson gets into situations that neither King of the Hill character could even imagine. For a Simpsons episode to work, Homer must be Homer. However, in many of Futurama's second-season episodes, you could replace Futurama's main character, Fry, with a different twentieth-century naïf, with little effect.
There's nothing wrong with centering a comedy on conceits and gimmicks; but when that's the approach, the jokes and gags had better fly thick and fast. Yet as I watched Futurama: Volume Two, I kept thinking, "I wish they would've read a little more science fiction; that would've given them a lot more jokes and references." My point isn't that SF parody must include print-SF in-jokes; it needn't. My point is, the viewer should never have time to think, "There could be more jokes." The writers of Futurama: Volume Two didn't have enough ideas. No wonder the billboards in the opening credits never change.
DVD Extras: Full-length audio commentary on all 19 episodes; deleted scenes; international clips; Easter eggs.