Zombie Movie Marathon Somerville Theatre 55 Davis Square Saturday, October 6, 7:00 pm to 7:00 am Sunday $24 in advance/$30 day of show BostonSci-Fi.com, the same folks who brought you the SciFi Film Festival, is offering a little taste, so to speak, of what's to come with night full of brain-starved zombies. Garen Daly, local sci-fi master, has listed a few of the movies of the evening on the Boston Sci-Fi.com website. The Somerville Theatre......