Richard Dreyfuss in a boat. Nubile partygoers stalked by a toothy, swimming predator. What sounds like the Steven Spielberg masterpiece Jaws is actually Piranha 3D, a tongue-in-cheek horror film from director Alexandre Aja (High Tension). Helping Aja contain the centuries-old threat onscreen is Elisabeth Shue, Christopher Lloyd, Ving Rhames, Jerry O'Connell, and up-and-coming actor Steven R. McQueen. The young star of the CW's Vampire Diaries spoke to FilmCritic.com about Comic-Con, his fear of the toilet, and the oil tanker that pumped gallons of fake blood onto the Piranha set.