Apart from Beautiful Barca of course...
Spain - Athletic Bilbao and Sevilla. I have no beef with Valencia, and unlike a lot of Barca supporters, I don't hate Atletico M*****. A lot of their fans are idiots, and they are not the working class heroes they are made out to be, but I 've never had any major problem with them.
Italy - Livorno, and again, I have no problem with Juve.
France - Marseilles.
England - Don't get me started here. Being Irish, I feel embarrased at the amount of alleged "football" fans in Ireland who foam at the mouth over the Premiership and even lower leagues, and turn up their noses at European/World football. I've lost count of the amount of times in a bar I've seen Irish lads turning their back on live Spanish/Italian/German football to drool over "highlights" of Sunderland vs. Hull. It's absolutely pathetic, and perhaps explains why we have such a poor national team too, as so few Irish players have the courage and ambition to step outside their comfort zone and learn how to play proper European football when they can be farting around for Reading, Preston, or Blackburn instead. That said, I do respect Arsenal and Aston Villa to some extent.
Holland - Ajax
Germany - St. Pauli, and Werder Bremen to some extent too
Scotland - Celtic, Dundee United, and Hibernian to a lesser extent too
Portugal - Benfica
Ireland - Shamrock Rovers (even though some of their fans can be total idiots). I have a lot of respect for Cork City too.
Argentina - Boca Juniors