To be fair, when hundreds or more are on the pitch at the same time, the 'opposition' players are at risk from a nobhead (we have all seen the coked up lads at games). Coupled with that, at the 'big' games (which is when these tend to happen), one set of fans will always be p8ssed off, with the others goading them. More so when they are on the pitch. Would have been very interesting if Sheffield united had won the penalty shoot out - how would the Forest fans have reacted? I get the 'celebrations' but there is a reason why fans aren't allowed on the pitch.