F1 Grand Prix of Brazil 1994 - Senna vs Schumacher

Senna and Schumacher delivers a great show. From 0:23 on you can clearly see that Schumacher overtook pole setter Senna during the warm up lap (what is strictly forbidden !) but (unlike at Silverstone - later that year) the German wasn't even warned for that act. And there was a spectacular 4-car crash too : from 19:43