Well, yeah, considering they help move the story along, and if I remember right, give you hints on what to do, ie, the end where you have to kill your saber to beat the game.
And Shepherds we shall be
For thee, my Lord, for thee.
Power hath descended forth from Thy hand
Our feet may swiftly carry out Thy commands.
So we shall flow a river forth to Thee
And teeming with souls shall it ever be.
In Nomeni Patri Et Fili Spiritus Sancti.
OMG Jedi Knight 4!!!