I have been showing my wife DW, and we just finished series 4 with Donna. Her observations so far are Martha Jones is her most capable companion (which I agree with) and too many Dalek episodes (I am definitely starting to agree with this). Donna's season is very interesting. I like her combination of feistiness and vulnerability. I also do like her tragic exit, though I think the show developed a bad habit of always having those. Some things don't make as much sense in hindsight or feel like they could have been done better (some of the really over the top epic story lines in the Davies era feel a little small on TV with a TV budget). I think the best episodes are more like the classic doctor who show, with emphasis on things like story and dialogue. Though some of the more ambitious ones, like Silence in the Library really hold up. Eager to see what she thinks of the Tennant specials and the Matt Smith Era.