Joystiq has posted an interview with Dustin Browder. They discuss various things about SC2. For once, I'd say most of it was not already known! One interesting tidbit is that a few team member's faces are being used for unit portraits, including Dustin lending his face to the mercenary Goliath pilot in the SC2 campaign. (mercenary units are campaign-only stronger versions of regular units, for more info see this article about SC2's campaign from Ars Technica)