There are two other clubs that I'm passionate about:
Bulgaria - Ludogorets Razgrad (local club, hometown)
The Netherlands - Ajax Amsterdam, back in the mid-90's their squad was one of the first things I memorized related to football. Van Der Sar, Reiziger, Frank Rijkard, Bogarde, Danny Blind, Seedorf, Frank and Ronald De Boer, Edgar Davids, Jari Litmanen, Marc Overmars... crazy, oh I forgot Kluivert!
Jari Litmanen was my hero.
Teams I follow, but not getting too much involved:
England - Arsenal and Derby County
France - Lyon and Marseille
Germany - Werder Bremen
Italy - used to be Inter in the 90's, now supporting Atalanta, the clubs is doing well with young talents.