While this is both ambiguous and vague, most premises of film ideas have attached to them some form of 'mindset(s)' that they wish to convey. What is *<JO>* to you, personally? What makes it great? Is it the vast history? The discipline we all share? The community? The inactivity of our Cou--.. err, yeah.
Think of ways you can convey what makes you excited about our family to those who aren't inside. As for the specifics, I'd feature candid shots of Master-Padawan/The upcoming Academy training. Get ingame images of an archive, and mention that we've got a long, long history of success. Things like that.
Oh, and don't edit it in Windows Movie Maker!
