Yup, there is another hidden in the game called mtm2-fun.loc, that replaces most of the text strings with funny/sarcastic lines - "Skill" becomes "Ego" and so on (that one's pretty good and will probably keep you going for a while
).
I'd assume that different language versions of the game (if there were any produced) would have loc files to handle the translations, that if you had them, you could use yourself. However I don't know of any others you can get off the top of my head, though making up your own loc files would be dead easy so someone's probably done it.
Edit: I searched the forums just out of interest.
All you could possibly want to know about loc files:
http://forum.mtm2.com/viewtopic.php?t=4317
And apparently <a href="http://forum.mtm2.com/viewtopic.php?t=2708">Kmaster</a> and <a href="http://forum.mtm2.com/viewtopic.php?t=2504">Crashcart</a> made Spanish and French loc files respectively.