Audio commentary for movies from Mike, Kevin and Bill, aka the guys from Mystery Science Theater 3000.
The audio commentary generally involves comedy revolving today's culture, and so requires the viewer to at least have some knowledge of culture (i.e. celebrities, events, etc.) So if you're one of those illiterate people that actually found The Hangover to be funny, then you won't find these funny (see what I did there? This is generally something like the Rifftrax jokes).
Generally the movies the Rifftrax crew rip on are bad movies (Twilight series, Avatar, Avatar The Last Airbender) or famous / good movies (Jurassic Park, Harry Potter). Those are just examples.
Discuss the "reborn" MST3k.
