Different flick, great flick.
This isn't a remake as much as it is a genre pic... it just so happens that Halloween IS the genre. It manages to give you the backstory without being sympathetic, convenient, or trite (Hannibal Rising couldn't pull it off) and when we cut to 15-years-later, it's the Michael everyone knows, done about the best as it's been done since the original. Whether it was worth making is arguable, but it's definitely worth seeing.