Steve Martin's last good film?! Eddie Murphy plays a great nerd/Scientologist, District 9 holds up great a decade later, it's the beginning of the end for Nightmare on Elm Street, James Cameron and Hayao Miyazaki venture under the sea, and Rachel McAdam's husband has become unstuck in time! All that and more this week on Thirty Twenty Ten, your weekly look back on the week that was 30, 20, and 10 years ago.