They'll soon start using tape delay to overcome that. I was watching the live NFL game here the other night and was wondering why the field audio was going silent around every touchdown score or on field ruckus so put it on the radio to realise the TV coverage was 15-30s behind reality.

It's also been a big problem in golf this year with countless apologies being offered by the networks when the mic picks up the odd 'F%ck It" or "Sh!t" comment. Nick Faldo's commentary is always the best as he just says 'That's a technical term" .