I have been watching Formula one only from the end of the 1999 season when Micheal Schumacher came back from a leg injury of his high speed crash at Silverstone. After watching almost every race from then, I have started collecting videos of previous years races which I missed. Recently I found this video of spectacular crash at 1998 Belgian Grand Prix where 16 cars crashed. The Formula one archives says only 14 people retired though. But still its a must watch video. Njoy.