Holly Willoughby is fantastic. I've always thought so. And on The Xtra Factor she really is at her best. Her informal interview style with the judges and members of the audience is tonely great for the show, which reveals more about the workings of The X Factor and the people on it.
The features in the show are funny throughout, especially the way the presenters take the mickey out of early contestants without them realising. It somehow gives you the impression that you are there with them.
In comparison to other reality spin-off shows this one is the best in terms of its features, tone and presenters.