Prince & the Revolution - Let's Go Crazy
The other number 1 hit from Purple Rain, this is a great rocker, while still incorporating elements of dance into it. Prince displays his prowess on the guitar, especially at the end of the song. Say what you want about the guy, but the guy is a helluva musician, and this is easily one of the best songs he ever wrote, and one of the standout MTV hits/videos of 1984, which is really saying something considering how strong of a year it was for pop songs.