NOTE: I’ll define a hit song as one having gotten a lot of radio play, many people have heard it, etc… you know what I mean. No obscure stuff. 
I was listening to Enjoy the Silence from Depeche Mode the other day, and it occurred to me that there are two pretty strange things going on in it, especially for such a successful song: first, the verse features two minor chords a minor third apart (chromatic mediant), and second, the chorus ends with a minor chord moving to a major chord a half step lower (I don’t know if there is a fancy name for this, though Jeff Loomis loves it). Such interesting harmonic choices!
What are some other big songs that dared to venture outside the realm of I IV vi V?
