Joss Whedon’s clever genre mash-up 2002 Fox series – part sci-fi, part Western --  gets an all-day marathon showing today on the Science Channel, beginning at 8 a.m. ET with the original series pilot. It's a stylish, stylized adventure story, populated by interesting characters and equally interesting actors. Nathan Fillion, now starring on ABC's Castle, stars -- and co-stars include Morena Baccarin, now of Showtime's Homeland, and Gina Torres, now of USA's Suits.