What I really like is when animated sitcoms take on novels, poems, movies or any kind of past production and adapt them to their characters. Making a spoof of Stephen King like Family Guy did in S07E15 or completely re-doing Die Hard like the Cleveland Show did recently in S03E07.
This happens frequently and especially in The Simpsons. Spoofs usually highlight the characters' personalities and mix them in with a story that doesn't seem appropriate to fit these out-of-context characters.
I like spoofs for two reasons. First, because they're really funny and second because they open the show and give a something more to their audience than the weekly jokes. This helps making TV a legitimate art form capable of building on the stones of past and present productions. So that's something good !
Let's take a look at a few of these spoofs :