Another day, another 70s song. Fans of Scrubs may recognise this song from the show, but for those who don't, it's a brilliant slice of good old American rock. With arguably the greatest guitar rift any side of the Atlantic, American Girl is the embodiment of its genre. Tom Petty's vocals are sublime, bringing to mind road trips and smoky bars, and the melody furthers this illusion. The lyrics are great too - 'she was an American girl, raised on promises' being the opening line - and it's the kind of song that will be identified with for generations. If you haven't heard this song, this is your warning that you're missing out.