Here's one for the history books: the original four-page story premise for the tenth episode of Wing Commander Academy, "On Both Your Houses". A premise document like this was the first step in developing an episode of the show. Once it was approved by the show's producers it would be expanded into a three act outline and then a full script (which would go on to be boarded and then animated).
The final episode is very close to this initial premise although it does feature some differences, including setting Archer's robot fight at the Greenhouse lab, having Maverick ultimately be the one to shoot down the Kilrathi pilot and ending with an unused coda aboard the Tiger's Claw. You can download the PDF here; a full transcription is available in the WCPedia.