Not really, the question is biased and implies that the answer must be Harry Potter or they are wrong. It would be better to ask either "What is your favourite movie?" or "Do you like the Harry Potter movies?"
Dobby the house-elf told Harry about it .
The Weasley's house was never destroyed in the books, this only happened in the movie Harry Potter and the Half-Blood Prince.
Harry Potter of course.
Harry Potter and the Chamber of Secrets, the second movie.
Fluffy was in the first Harry Potter... Harry Potter and the Sorcerer's Stone.
The movie in which Harry Potter sees Voldemort in a mirror as himself is Harry Potter and the Order of the Phoenix. :)
harry potter and the deathly hallows is the upcoming movie
yes
Yes, it went really well.
Not really hurt
Yes. The first movie in the Harry Potter series is called Harry Potter and the Philosopher's Stone.In the US the title was changed to Harry Potter and the Sorcerer's Stone.