Thou Shalt Always Filter: chrismear's recording of robocop is bleeding's parody of the proscriptive Dan Le Sac vs Scroobius Pip ditty that ikkyu2 posted. Thou shalt go listen.
MetaFilter started as a community weblog in 1999, later added question and answers, then music by members, jobs, projects by members, a podcast, and finally an area dedicated to meetups.