High Quality Content by WIKIPEDIA articles! Samuel Stewart "Sam" Witwer (born October 20, 1977) is an American actor and musician. He has appeared in individual episodes of numerous television shows as well as minor recurring characters in shows such as Battlestar Galactica, Davis Bloome aka Doomsday in Smallville, CSI: Crime Scene Investigation, and Dexter. He also voiced, and gave his likeness to the main protagonist, Galen Marek/Starkiller, in the Star Wars: The Force Unleashed video game and its sequel. He is also star of the US/Canadian remake of BBC`s supernatural drama series Being Human on the SyFy Channel in the US and Space in Canada.