Mini-series materials:
Enter one of the following codes at the "Extras" menu to unlock various bonus 
materials from the Battlestar Galactica mini-series. The sound of a Cylon 
saying "By your command" will confirm correct code entry. 

Press Left, Up, Left(2), Down, Left, Up, Down.
Press Up(2), Down(2), Right, Up, Right, Down.
Press Right(2), Down(2), Left(2), Up(2). 
Press Down(4), Left(4).
Press Up(3), Down(3), Left, Right. 
Press Up, Left, Up, Right, Up, Left, Up, Right.
Press Right(4), Down(2), Left(2).
Press Right(2), Up(2), Left(2), Up(2). 

Have Starbuck and Apollo as wingmen:
Press Down(2), Left, Down(2), Up, Right(2) at the "Extras" menu. The sound of a 
Cylon saying "By your command" will confirm correct code entry. 

Unlimited missiles:
Successfully complete mission 2 under the expert difficulty setting to unlock 
the "Unlimited Missiles" cheat. 

Invincibility:
Successfully complete mission 9 under the expert difficulty setting to unlock 
the "Invincibility" cheat. 

All wingmen:
Successfully complete the game under the normal or expert difficulty setting to 
unlock the "All Wingmen" cheat.