l agree with most of these comments, i like the earth stories as they are more believable but i also enjoy them when they are on the other side of time itself.
rose was brilliant, free ma was good but was a hard act to follow IMO as a side kick, plus they spoilt it with the "her fancying him " bit................. i dreaded the thought of Catherine Tate doing it, however on Saturday i thought she was very good, i refused to watch the Christmas special because of her, but was pleasantly surprised by her acting................... even though i thought her "GRAN" character had joined at the end.