Plan 9 From Outer Space, Santa Claus Conquers The Martians, Manos: Hands of Fate, Troll 2—movies so incredibly, mind-bogglingly bad, that they’re awesome. To this august list, you can now add Birdemic: Shock and Terror. James Nguyen’s bargain basement ecological horror film will be screening tonight and tomorrow night, May 21 and 22, at Guild Cinema in Nob Hill as part of Alibi Midnight Movie Madness. Screenings start at 10:30 p.m. each night. Check out the trailer to your right and decide: Worst movie ever made ... or best worst movie ever made?