Not sure when you played it, but the "Final Cut" edition fixed a lot of the grammatical errors and also re-cast a lot of the voice actors. When I played it it was a very polished experience so I am willing to bet you played the old version.

Also the original creators have been forced out of the studio by scam artists. So if you want to buy the Final Cut edition, keep in mind that none of that money will go back to the people who worked on the game.