Goldfinger/Nena - "99 Red Balloons" (So many challenge ideas they could come up with for this song...)
A-Ha - "Take On Me" (I'd like to see a LEGO-ized remake of the music video as one of the challenges if this song was included)
Chic - "Le Freak" or "Good Times"
Days of the New - "Touch, Peel, & Stand"
Stray Cats - "Stray Cat Strut"
I'm banking on Take On Me and 99 Red Balloons.