I'm just amazed I've heard two of those mentioned so far - normally I'm so out of it when it comes to music (what can I say - I despise 99% of the popular shit and the hidden gems require too much digging for too occasional rewards )
Mine would have to be "Into Yesterday" by artist Sugar Ray. I first heard it in the animated movie "Surf's Up" and it is a very fitting song as it has an optimistic, Summery vibe to it
So what's yours?