Up there with the Old Firm, Derby della Madonnina and the Revierderby, El Clasico is among the biggest rivalries in world football.
This is a derby that transcends the turf and takes on a wider cultural significance. There is no other fixture in Spanish football (maybe even club football full stop) that carries the weight of importance as Barcelona vs Real Madrid.
In recent times the captivating subplot has been Lionel Messi vs Cristiano Ronaldo, but even with the latter no longer in Madrid, fireworks can always be expected and sinews will be strained to the nth degree to gain bragging rights.
But on which side of the divide should your allegiance lie? There is no fence-sitting in El Clasico. It is a derby of such theatrics, world-class quality and intense passion that it would feel almost wrong to take a neutral stance; instead, you must throw yourself into the drama-soaked spectacle.
In the spirit of this, the quiz below should help the undecided among you determine whether you are a Madridista, or a Cule.
Don’t forget to let us know how you got on via Twitter or Facebook!