 When the character Vala Mal Doran (Claudia Black (I) (qv))  returns, she says something along the lines of, "I know Ive never  met you before, I would remember if I did," when she first meets Lt.  Col. Cameron Mitchell (Ben Browder (qv)). Claudia Black and Ben  Browder previously played the two main roles on  _"Farscape" (1999)_ (qv), which also aired on the Sci Fi Channel.  Because of the plot for that particular episode, there are also a  few jokes regarding marriage and having children, this is likely  also a reference to them, as their characters, John Crichton and  Aeryn Sun, eventually got married and had a son in the follow