Some call it the "SNL" curse. No, not the one where all the cast members die young and tragically. It's the one that dooms former "Saturday Night Live" (search) comedians to star in what may be some of the worst movies ever made. And that's not just the opinion of a few disgruntled late-night television viewers. Comedian Chris Rock (search) — himself a former "Saturday Night Live" star — has made his castmates' post-show woes into the butt of one of his jokes, proclaiming that an ex-"SNL" player's name on the opening credits often might as well be a stamp...