Man United, Chelsea and Madrid.
United plays boring football, they have arrogant fans who think United can compete with the best in Europe with it's current team, their players are divers and they have the help of referees. Also Ferguson doesn't get punished for any of his comments about refereeing, unlike other managers.
Chelsea play anti football, defense the whole time, they think they are actually the best in Europe (pfft) and they glorify people like Cech or Drogba who simply got lucky. Also, they have ***** in the team like Terry.
Madrid, because of Mourinho's arrogance, their inability to admit defeat as well as their constant pressure on referees in Spain. Also arrogance and self glorification of their players. And their brutal play, pepe, alonso etc.