Looking for a sneak peek at Syfy's new mini-series Riverworld , starring Dollhouse's Tahmoh Penikett? You're in luck. Distributor RHI has released the first trailer for the mini-series (itself a backdoor pilot for an ongoing series), which also stars Laura Vandervoort, Mark Deklin, Peter Wingfield, and Alan Cumming, among others. The project was written by Robert Hewitt Wolfe ( The Dresden Files ) and directed by Stuart Gillard ( 90210 ). Here's how Syfy described the four-hour mini-series: "Tahmoh Penikett ( Battlestar Galactica/Dollhouse ) and Laura Vandervoort ( Smallville ) star in Riverworld , based on the popular award-winning series of novels by Philip Jose Farmer. Penikett stars as Matt Ellman, an American war zone reporter who has witnessed the worst of humanity first-hand yet still grasps on to an optimistic spirit. When a suicide bomber kills both Matt and his fiance Jessie, played by Vandervoort, they awaken, separated in a mysterious world where everyo