Anyway, I don't know if I can really accurately say who the worst director ever is, but one guy whose work I've never been able to tolerate is Stephen Sommers. I've seen everything he's ever directed, and every single one of his films has left me completely cold afterwards. Just empty, soulless work.
Oh god. I've never been able to finish Helsing, even with the commentary on to provide technical interest. And when I saw The Mummy Returns, I felt insulted. When whatsername was killed I was yelling "Die!!!" at the screen (audio in the theatre was so loud no-one could hear me anyway), as I knew she was just going to walk back on screen 5 minutes later.
...and Glenn and Glenda...and Bride of the Monster and everything else he did.
A director whose films are fun to watch can't be called the worst ever.
Nobody watches his movies because they're good. They're fun to watch because theyre so bad.
*Sigh* That book the Golden Raspberries has spread so many erroneous notions....
There are obvious problems with Ed Wood's movies, to do with low budgets, mediocre acting, and lack of attention to detail, but if you watch other poverty row sci-fi and horror movies from the same period you'll find the same problems there.
Wood's big problem was an inability to concentrate and refine his work (he probably had ADHD), but he did have two important virtues: he had a talent for spotting people who would look interesting on screen (regardless of their acting ability), and he was able to inspire great enthusiasm and commitment from his cast, unlike other boring one-take wonders of the time. Perhaps the most notable example of this is Lugosi, who put in really powerful performances for Glen or Glenda, and Bride of the Monster. This is undeniable if you compare them with some of Lugosi's other work from the 40s onward.
Speaking of Glen or Glenda, that's actually an important film, being a very open, emotional, personal statement about an issue regarded as too extreme for the mainstream even today. It's also quite experimental in structure.
I'll also take this opportunity to say that Paul WS Anderson has gotten a bad rap. Death Race and the Resident Evil films are interesting action films (not counting RE 2 and 3, the worst of the series, which he didn't direct), and I really like his Musketeers movie. But there's no point expecting fanboys to view these things objectively.
BTW, Timby, Soldier and Pompeii were also written by others.