Harry Potter and the Chamber of Secrets & Harry Potter and the Prisoner of Azkaban

These are very enjoyable! Chamber of Secrets improves on Philosopher's Stone, moving faster, introducing some fun new characters, and managing two spectacular sequences (the spiders and the basilisk) which top anything in the first film, and is itself improved upon by Prisoner of Azkaban, which is notably darker than the previous two (in part, perhaps, thanks to Alfonso Cuaron's coming on board as director for it). Shirley Henderson arrives in number 2 as Moaning Myrtle (don't know if she'll be back), and Gary Oldman as Sirius Black (who will definitely be back) in number 3...enjoyed Margoyles, Branagh and Thewlis, too, and Emma Thompson as well (though I didn't recognise her till I saw her name in the credits); Alan Rickman continues to be a treat. It's also fun to watch the three child leads growing up; thus far in the series, at least, it works well, although Emma Watson as Hermione increasingly threatens to act the other two off the screen.