Shall we split the leagues for example i will take premier league you serie a someone else primera etc.
However lets think of teams first i'll name some and you name some anyone else who wants to participate can also name some.
Lazio 2000,
Parma 98-99,
Milan 88-90, 94, 2000, 03, 05, 07.
juventus 95-97, 99, 03.
napoli (maradonas team),
inter 99, 2010.
ajax 95 & cruyffs era,
r madrid de stefanos era, galacticos and 2011.
barcelona 92, 94, 2000, 06, 2009.
valencia 2000
deportivo 2000
b munich 99,2001, 2010 & beckenbeurs era.
b dortmund 97
b leverkuson 2002
chelsea 05 and 08.
man utd 99, 08 and charlton era.
liverpool 05, 80s.
arsenal (that unbeaten team cant remember what year)