"Everlong" by the Foo Fighters is one of my favorite songs. Its a great piece of songwriting, and I always wondered why it made me feel a certain way. Well I came across an article on Wikipedia that explains very well why the song works the way it does, and it will definitely help me with future songwriting. Check it out even if you're not a fan of the Foo Fighters... but who isn't?
http://en.wikipedia.org/wiki/Everlong