Have Starbuck and Apollo as your wingmen:
     Go  to  Options,  then  to  Extras. Press Down, Down, Left, Down,
Down, Up, Right, Right.

Unlock Content from SciFi Mini-Series:
     Go  to  Options, then to Extras. Enter one of the following codes
to unlock bonus content from the SciFi mini-series:

1) Up, Down, Down, Left, Left, Left, Left, Right, Right, Left, Left, 
   Up, Up, Left, Left, Down, Left, Right
2) Left, Up, Left, Left, Down, Left, Up, Down.
3) Up, Up, Down, Down, Right, Up, Right, Down.
4) Up, Left, Up, Right, Up, Left, Up, Right.
5) Right, Right, Up, Up, Left, Left, Up, Up.
6) Down, Down, Down, Down, Left, Left, Left, Left.
7) Up, Up, Up, Down, Down, Down, Left, Right.
8) Right, Right, Right, Right, Down, Down, Left, Left.