They literally are just that AND they are also easily available, no idea what the previous poster was on about. Download the latest public source code from here:
You must be registered to see the links
, in "includes" folder you have a file for every character and their content, sorted by planet.
Say you want to see a specific scene with a male Sydian, you go includes -> tarkus -> sydianMale.as, open it and search for the specific scene, copy the name of the function that starts the scene, use it in-game with the "impulse" cheat and there you go.