Craig Revel Horwood has spoken of his shock at hearing the news of Arlene being replaced by Alesha Dixon. http://tv.sky.com/strictly-craig-blasts-alesha

Sounds like he is rather sceptical of Alesha's judging ability. I think it will be interesting to see how they all interact with her- have a feeling there may be some tense moments. As much as I don't think Arlene should have been replaced, I don't want Alesha to fall flat on her face. I hope they're nice to her!