It's funny how there are so many songs that I never used to like until I hear them again, years later, and I am just nostalgic enough to be won over.
I just YouTubed and watched every version of "Can't Take My Eyes Off You" that I could find. Including a High School Musical song with the same name that appears unrelated. The version that I first heard and that made me fall in love with it was an a cappella rendition by Penn Atma, who I normally don't like but who nail this song so beautifully. To date, I haven't found one that I like quite so much.