They showed just before that the Coria/Nadal final from the year prior, which was equally great, especially from a sort of classic clay court tennis perspective, for whatever that's worth. The use of the court in that match was outstanding.
Really blows me away how people can look at matches like these and contest that Nadal had no competition on clay back then.
Even more amazing are those who genuinely believe Nadal has played better on clay in any of the last five years. Principally, he's the same player on clay now that he was back then. But back then, the errors were few and far in between, the gameplan was very disciplined, the footwork and movement were explosive, and the confidence was at a high. His game still topped off between '08 and '09, but some of those early clay expositions were among his best.