British thesp Stephen Moyer ( Quills) has been tapped to play vampire Bill Comton to Anna Paquin's Sookie in True Blood, the HBO drama pilot based on Charlaine Harris' Southern Vampire book series, says Reuters. As previously reported, Six Feet Under's Alan Ball is on board to write, direct and exec-produce. Also added to the cast is Brook Kerr ( Passions), playing a bar coworker of Sookie's.