Screenwriter
Steve Kloves
While the director and cast of Harry Potter are pretty much all so British we imagine they all own Union Jack-patterned pyjamas, somehow native Texan Steve Kloves ended up responsible for translating J. K. Rowling's vision to the screen. And not just for this movies, but for almost all of the Harry Potter films—with the exception of Harry Potter and the Order of the Phoenix—you know, the one that comes right after this one. (Don't worry—Steve was back in action in Half Blood Prince.)
You can check out what we've said about Kloves and his super distinguished career in our guide on the very first Harry Potter film: Harry Potter and the Sorcerer's Stone.