Cameroon's Samuel Eto'o Fils helped Barcelona trounce Real Madrid 3-0 to move seven points clear of their great rivals in Spain's La Liga.
Eto'o opened the scoring against his former club when he capitalised on a mistake between Real Madrid defender Roberto Carlos and his goalkeeper Iker Casillas.
The goal took Eto'o's tally to 13 goals in eight matches against Real Madrid and puts him top of the scoring charts in Spain with 10 goals this season.
Giovanni van Bronckhorst and Ronaldinho also scored for Barca.
England captain David Beckham started the match but endured a miserable evening and was replaced by Michael Owen in the 54th minute.