Can be from any genre. Mine is when an acoustic guitar comes in towards the end of a song and totally changes or reframes the mood/energy (see "Money" by Widowspeak)
I love when the track goes completely silent for a single rest after some buildup and then punches back into the full chorus. If that “gap” in noise is part of the melody itself it’s even cooler. It makes the following sound so much more impactful, even if the actual volume hasn’t increased by much.
Yeah, that's one of my favorites too! Got any good examples you like? One of my favs is "Ivory" by Polyphia. It hits right towards the end of the song and always gets me good.