If you ever get the chance to go to a futbol game in Latin America - go. These games and stadiums put the NFL to shame. In Buenos Aires, River Plate is one of several teams that show off their pride, blanketed in red and white, within their 80,000 capacity stadium where no alcohol or visiting team fans are allowed inside (due to the multiple fanatic-induced deaths last season).
Look for the standing-room-only, hard core fans in the upper end zone called Los Borrachos del Tabon, The Drunks of the Terraces. They lead the entire stadium in 90 minutes of non-stop cheers, songs, clapping, shouting and all around mayhem. There's even a band up there. It's outstanding.