In contrast to the rock/pop/alternative TMBG-songs, it's the oldies that define MitM for me.
Examples are:
Steelers Wheel - Stuck in the Middle
Nat King Cole - Papa Loves Mambo
Queen - We are the Champions
Lipps Inc. - Funky Town
Abba - Fernando / Dancing Queen
and many more.
I don't know why. They simply fit to MitM.