Took a bit of thinking about but I like to think of a great Rockn'roll song as one that future generations can hear and think yeah that's cool and be able to play it I know some of the above can fall into that category especially Buddy Holly but I've gone for Come on Everybody by Eddie Cochran. Here's a clip of The Stray Cats doing it. Great Band
YouTube - Stray Cats - Come On Every Body - Live!
You don't stop laughing when you grow old; you grow old when you stop laughing.