The "worst song" thread got me thinking about this. Not really looking for the worst song, just the song that whips you to death. If you were being interrogated and the police put this song on repeat you'd tell them everything they wanted to know before the song was even finished.
Walking on Sunshine: Katrina and the Waves
Karma Chameleon: Culture Club
Too Shy: Kajagoogoo
Wake Me Up Before You Go-Go: Wham
Notice an 80's theme there?