Oh, the magic of Twitter! Following up a tweet from @rubiales62, which led me to http://ictmagic.wikispaces.com/%2ARecently+Added, I scrolled through the wiki and found this:
http://www.starwars.com/games/playnow/crawl_creator/
It allows students to input 41 lines of text which then appear on screen in the classic "Star Wars Crawl" mode, to the accompaniment of the theme music! How cool is that! What a neat way to practise some key language in preparation for controlled assessment! Go on - have a play - you know you want to!