Live football is great! I love being at matches. But my second choice for this is watching in a good bar with atmosphere and a bunch of fans. I recently watched Real Madrid beat Barcelona in Madrid in a bar. El Clasico surrounded by Real fans. Real won, a very happy night for Madrid. The streets later were full of fans, police supervising them. Car horns, cheering from everywhere, great.
Two moments I remember well. A very keen female Barcelona fan, positioned for a perfect view of the screen, passionately angry if anybody stood in front of her.
And, the best moment- when Barcelona scored, a Barcelona fan ran in from outside the bar, quickly jumped up and down and cheered, and ran straight back out again.. great