Music is a very important part of Malcolm in the Middle. In my opinion, the producers have a very nice taste for music. I have learned to like even the ridiculous songs, that I would never hear on my own, like Dancing Queen, because when I hear it, I always have to think of this special scene.
Anyways, what are your favourite songs that appear in Malcolm in the Middle? If you can't think of any, try Radio Malcolm (most of you will know that already, I think).
My favourite Malcolm songs are
Debussy - Claire de Lune (Song Dewey plays on the piano in the garage)
Abba - Fernando (Dewey's Table Dance)
Steelers Wheel - Stuck in the Middle (Hal plays that song in the end of "Funeral")
and many more.