Why are we worried about whether or not other people will like this episode? If you like or hate it, more power to you.
Anyway, moving on, loved the Starry Night scene and it wouldn't be Richard Curtis without the musical montage of sorts. A little sappy but it does its job. Also, nice touch for the BBC to put up a helpline during the credits, too -- that was unexpected for me.
The monster parts were a bit throwaway, and I found myself wondering halfway through if EVERY Doctor Who episode MUST have some anomalous lifeform, whereas in the very early days there were history pieces. Then again, this episode wasn't much like Doctor Who anyway, so I suppose the monster is about the only thing that would really connect it. Yep, it's a requisite.