Ahead of its nationwide release in theaters this weekend, Open Road Films has debuted a new red band trailer for Nightcrawler, which the critics are describing as "f---ing amazeballs." Be warned, there is plenty of R-rated language and bloody footage in this trailer, so watch at your own risk.Set in the nocturnal underbelly of contemporary Los Angeles, the pulse-pounding thriller Nightcrawler stars Jake Gyllenhaal as Lou Bloom, a driven young man desperate for work who discovers the high-speed world of L.A.