Playing sides you have ever seen in your life? Top three in no specific order: Liverpool side in Dalglish / Rush era Holland 74-78 World cup squad, total football Brazil 1970.
No particular order: late 80's - early 90's AC Milan 1970's Brazil 2006 Italy Last one is a bit biased.
Celtic - Jock Stien Era... Won the quadriple Manchester United Treble era Argentina 2006 - Without a doubt the best footballing team at the world cup
Man Utd Treble era Brazil 1970's Juventus 95-98 They had great players and was in four european finals in a row.