Bonus Feature and Special Message:
From Disc One's "Special Features" menu, click on "Commentaries". Now, highlight "Main Menu" and press your Right button to highlight the lawnmower. Hit enter to view the vintage 1950's short film "A Mowing Lesson for Charlie".

From Disc Three's main menu, highlight "Special Features" and press your Left button to highlight the town map. Hit enter to see a special "thank you" message from Hank Hill saluting all the folks who worked hard on the first season of the show.