I went back and listened to Who Can It Be Now? by Men at Work and almost right away I noticed that the main chunk of the song tends to swing back and forth between I and what feels like the V below. This back and forth between I and V is set up in the intro of the song, and the pattern is almost never broken. I never really payed much attention when listening to this song because this is typically what I listen to when driving or working on something, but I definitely have noticed the chord changes now. These changes are the core of the song, much like Billy Ray Cyrus' Achy Breaky Heart, and having that brought to my attention really changed my perception of the song.