1. Internazionale Milano - Milan (Italy).
2. Boca Juniors - River Plate (Argentina).
3. Flamengo - Fluminense (Brazil).
4. Bayern München - München (Germany).
5. Al Ahly - Zamalek (Egypt).
6. Tsentral'niy Sportivniy Moscu - Spartak Moscu (Russia).
7. Nacional - Peñarol (Uruguay).
8. Olimpiakos - Panathinaikos (Greece).
9. América de Cali - Cali (Colombia).
10. Colo Colo - Universidad de Chile (Chile).

Rangers vs Celtic is worse than any of these games. In the stadium it is safe but on the streets of Belfast and Glasgow loads of people end up in hospital every time they play and after most games people die. The politics involved make it so much more dangerous. It isn't left side vs right side. It is Britain vs Ireland and Catholics vs Protestants. The game highlights the problems in Northern Ireland between the two groups and the civil war that's gone on for years.

Benfica-Porto
Roma-Lazio
Celtic-Rangers
River Plate-Boca Juniors
CSKA-Zenit
Olympiakos-Panhatinaikos
Partizan-RedStar
Internazionale-Milan
Fla-Flu
Braga-Guimarães

Partizan-Zvezda(Red Star)
PAOK-Aris
Panatinaikos-Olimpiakos
CSKA S-Levski
Botev-Lokomotiv
Lazio-Roma
CSKA M-Spartak
Boca-River Plate
Steaua-Dinamo B
Hajduk-Dinamo Z

Having said that in Italy there's' unprecedented repression, and that the derby in each category are prohibited and are a lot to me

roma lazio
genoa samp
paok aris
celtics rangers
panat. aek.
red star partizan
etc
not in order of beauty

My top 10 :

1. Rangers vs Celtic
2. Boca vs River
3. Red Star vs Partizan
4. Olympiakos vs Panithinaikos
5. Dinamo vs Hajduk
6. Gornik vs Ruch
7. Wisla vs Crocowia
8. Ajax vs Feyenoord
9. Flamengo vs Vasco
10. CSKA vs Spartak

Roma - Lazio
Red Star - Partizan
Rangers - Celtic
Panathinaikos - Olympiacos
Samp - Genoa
West Ham - Millwall
Napoli - Roma

if derby derby also means non-citizens then, in Italy there are fantastic in every category for example

catania palermo
brescia atalanta
napoli salernitana
pisa livorno
roma napoli
bari lecce
bari taranto
verona vicenza
salernitana avellino
ascoli ancona
etc...
etc..
but there 'a little problem, every game every hot derby is closed to the public and there are constraints on incredible.

1.Chervona zvezda - Partiza
2.Oly-Pao
3.Hiffa derby
4.Dinamo Zagreb - Hajduk Split
5.Wisla-Cracovia

1) Hajduk - Dinamo
2) Zvezda - Partizan
3) PAOK - Aris
4) Olimpiakos - Panatinaikos
5) Wisla - Cracovia
6) Boca - River
7) Celtic - Rangers
West Ham - Millwall
9) Spartak - CSKA
10) Fenerbahce - Galatasaray

Cska-Levski
Zvezda-Partizan
Hajduk-Dinamo
Spartak-CSKA
Milan-Inter
Lazio-Roma
OLY-PAO
Aris-PAOK
HSV-St.Pauli
S04-Borussia Dortmund

Boca - River Plate
CSKA - Levski
Dinamo - Hadjuk
Partizan - RS Belgrad
Olympiakos - Panathinaikos
Ferencvaros - Ujpest
Lazio - AS Roma
Millwall - West Ham
Ajax - Feyenord
Milan - Inter

Partizan - Red Star
Lazio - Roma
Olympiakos - Panathinaikos
Hajduk-Dinamo
Millwall - West Ham
Celtic - Rangers
Boca - River
Inter - Juventus
Fenerbahçe - Galatasaray
Ajax - Feyenord

Maribor : Olimpija
red star : partizan
inter: milan
fenerbahce : galatasaray
hajduk split : dinamo zagreb
olympiakos : panathinaikos
CSKA : spartak

when it comes to derby and citizens' one thing and then you can make a European ranking, but when it comes to games with historical rivalry 'as derby derby or regional speech and then the' different and in Italy there are all kinds of fantastic with our performances was incredible feature, although today they are all banned and repressing everything at every level.

roma lazio genoa samp
roma napoli
catania palermo
pisa livorno
brescia atalanta
napoli salernitana
pescana ascoli
messina reggina
bari taranto
etc.. etc.. etc...

Not in order :

Hajduk Split - Dinamo Zagreb
Roma - Lazio
Red Star - Partizan
Panathinaikos - Olympiacos
West Ham - Millwall
Benfica - Sporting
Fenerbahce - Galatasaray
Boca - River
HSV - St.Pauli
Aris - PAOK

In south america

Flamengo x Vasco

Palmeiras x Corinthians

Boca x River

Peñarol x Nacional

17th of September 2011 Millwall - West H*m
4th of February 2012 West H*m - Millwall

LOVE IT

Goodbye Boca - River

at least for this year

With the relegation of River Plate, in 2011 the biggest derby in Argentina will be Independiente - Racing.

Casablanca Derby ( Wydad.A.C * Raja ) the best derby in africa and middle east ! i advice you to take a look in youtube videos of this extraordinary derby

Partizan - Crvena Zvezda

Panathinaikos - Olympiakos

Lazio - Roma

CSKA Sofia - Levski Sofia

Dinamo Zagreb - Hajduk Split

Boca Juniors - River Plate

Sampdoria Genova - FC Genova 1893

Aris Saloniki - PAOK Saloniki

Legia-Polonia

Inter - AC Milan

WEST HAM - Milwall

Crvena Zvezda - Partizan
Paok - AEK
Spartak - CSKA
Dinamo(Zagreb) - Hyidyk
Lazio - AS Roma
Sampdoria - Jenoa
Millwall - West Ham
Levski - CSKA
Austria - Rapid
Lyon- Saint-Etienn