I find it utterly amazing that the BBC can come out with such detailed information -- yet still manage to avoid actually confirming what day these shows will air! Part one will obviously air on Christmas Day (at least so we all are assuming) but it would be nice if they confirmed whether Part 2 actually will air on New Year's Day or if they're planning a back-to-back broadcast on Boxing Day.
Once again, the whole "avoiding counter programming" argument is stupid on this occasion because it'll generate massive ratings no matter what ITV or C4 puts up against it.
Alex