Star Trek: The Next Generation
Contributed by Richard

Level select:
Press Y, Y,  X, X, A, A, B, B at the title screen. A beep will confirm
correct code entry. Press Start to pause game play, then press Y to
display the level selection screen. 

View ending sequence:
Enter TFTTLTBV as a password. 

Mission:                                          Password:
Orientis Alpha IV                                 BGTTBTBU        
Eunacian's Spacecraft                             CGTTBTBB
Miners on Orientis Gamma II B                     DJTTCTBV 
Trip to Codis Mu IV                               GCTTCTBV
Nakamoti Freighter                                JFTTCTBV 
Orientis Gamma                                    KFTTCTBB
Appearance of the IFD                             LQTTCTBB
Crystal Shard 1                                   LHTTMTBV
Crystal Shard                                     MGTTMTBV
Crystal Shard 3                                   NNTTHTBB
The Final Test                                    PHTTNTBV