John Mellencamp Cougar - I need a lover (long studio version) - YouTube
Making it one of the few Seventies songs I like. Quality guitar solo to start. The song would be mediocre without.
The Cure-Fascination Street (With Lyrics) - YouTube
As someone said about another song, it sets the mood. Something disturbing is coming. And that has to be the longest intro of a pop single in the last 30 years.