According to Wikipedia, the "Splat" Pack is a collection of independent filmmakers who, since 2002, have directed, written and produced numerous R-rated horror films, notable for their low budgets and extreme ultra-violence. Members include Alexandre Aja, Adam Green, Eli Roth, Darren Lynn Bousman, Neil Marshall, Greg McLean, Rob Zombie, James Wan, Leigh Whannell and Robert Rodriguez.