Spanish filmmaker Alejandro Amenabar may not  have a lot of notoriety outside certain film circles, but his work tends to get picked up by Hollywood and subjected to Americanized remakes. You can thank him for the surreal Vanilla Sky and the spooky The Others– both if which he wrote, one of which he directed (The Others). Alejandro’s latest (English spoken) film, the toga’d and sandalized Agora, which debuted at Cannes this week, stars Oscar winner Racheal Weisz and is all …