Today BioWare announced the voice acting cast for Mass Effect 2. The numerous TV/film actors lending their voice include Martin Sheen, Michael Dorn, and Tricia Helfer.

In the process of announcing the actors and their roles, the press release gives a few hints as to the game's storyline:

"Esteemed actor Martin Sheen stars as the mysterious Illusive Man who commands Cerberus, a secretive paramilitary organization dedicated to protecting human interests in the galaxy. Yvonne Strahovski plays deadly Cerberus operative Miranda Lawson, who has been genetically engineered for superior mental and physical traits. Returning to the cast from the original Mass Effect is Seth Green as Joker and Keith David as Admiral David Anderson. And rounding out the vocal roster are Tricia Helfer as EDI, the voice of the new Normandy; Carrie-Anne Moss as Aria T’Loak, the crime lord who rules the planet Omega; Shohreh Aghdashloo as Admiral Shala'Raan vas Tonbay; Michael Hogan as Captain Bailey; Adam Baldwin as Kal ‘Reegar; and Michael Dorn as Gatatog Uvenk.

Previous trailers showed the Normandy getting blown up. Nice to hear that we'll be getting a replacement with a sexy automated voice, though.