I’m absolutely floored by the Slamdance Film Festival’s selections for 2011, especially considering they accepted Paranormal Activity. The 17th annual fest, which takes place in Park City, Utah, simultaneous to the Sundance Film Festival, will screen 10 narrative films and eight documentary features in competition from Jan. 21-27. According to the press release, the only horror film playing is Fernando Barreda Luna’s eerie looking found-footage creeper Atrocious, a film we first told you about here. Atrocious focuses on the case (“Quintanilla Murder Investigation”) of a brother and sister who investigate a local urban myth while on holiday, resulting in strange occurrences at the family’s summer house. Check out the trailer inside.