I have seen the 1st one start to finish. Then after that I have seen parts of a couple others. I haven't seen any of the last 2 though. Good suggestion. Didn't think about Potter.
It starts off fun and neat, but as the movies go along it gets pretty dark and mature, all kinds of twists and turns and people dying and big huge wizard battles and stuff, it's actually a really well done series because they start off as kids so the theme sort of reflects that, then as they age through the movies the movies age with them and it gets more mature and deep. You won't be disappointed if you start watching them from the start and keep with it.