If Brazil win the world Cup in 2006, and can keep the likes of Adriano, Ronaldinho, Robinho and Kaka healthy for 2010, then this current team could well eclipse the great 1970 side of Pele, Jairzinho etc.
Robinho is only 19, Adriano 22 and Kaka and Ronaldinho are both under the age of 25 also. in 2010 they will be at the peak of their careers, and if Brazil can keep bringing up good young players like Cicinho who has just burst onto the scene then the next 2 world cups could be the showcase for perhaps the greatest ever international team.
Argentina is also looking very good in terms of bringing up young players like Tevez, Figueroa, Mascherano and Coloccini. The next 5 years could well be dominated by the two big South American nations.