Classic old songs that are massively overplayed and clichéd that you hear one day and instead of the normal "meh" you re-hear it as if with fresh ears and think "this is amazing"
My Girl just came on the radio. Thought it was boring and cheesy for years, but it really just hit me again. That plucked guitar part, the drums and vocals coming in, the horn part. Goosebumps.
What other songs have done this for you recently.
Sure you can say I should have posted this on the music board, but that will of course merely confirm everyone's suspicion that you're a raving paedophile and you and Saville were thick as thieves back in the day.