Wing Commander 4

Wing Commander 4 cheat codes: 
Start the game with:

wc4 -mitchell   - Displays a message while starting: Mitchel is no
longer working here (This was the WC III cheat)
wc4 -mitchell2  - Similar message to the on above
wc4 -test       - Says test OK but crashes than with a "file not found"
error. Probably only for development.
And now the one everybody is waiting for:
wc4 -chicken    - Startup will say: Chicken mode OK (bok bok)

As for Wing Commander III:
Control-W     - Kill target
Control-Alt W - Kill all enemies