Stars of cancelled-to-soon Firefly and movie Serenity keep making their way to the small screen. After it was announced Summer Glau was joining CBS' The Unit as a recurring character and that she would guest star in the October 19 episode of The CW's Supernatural, news comes that Captain Tightpants is getting Lost! As first reported by Kristin from E!, Nathan Fillion has landed an important role in at least two episodes of the current season. Fillion is set to play someone from Kate's past. Kristin hints that both characters may have been married... Fillion is set to make his first appearance in the Kate-centric episode that should air during November Sweeps. - Isabelle