Barca, love the passing football, and love watching Messi, watch every game on sky sports.
This.
And the underdog thing. Over the decades they have spent far less that state/bank supported Real, but have won a stack of honours against those financial odds.
Glasgow Rangers - I their patriotism to the UK, and a few years back saw a few games up there. Brilliant following, and Ibrox was ahead of its time.