In today's news update, one of the student-companies mentioned is Get in Line Games. Well PAX has plenty of lines for them to test their skills on... not sure how well their setup works for temporary solutions (might only work for more constant lines, like theme parks) but it'd be neat to see them in effect at PAX.
Imagine the possibilities... for example. Take a bunch of pre-recorded video phrases from Tycho.... put it in some multiple choice vote scenarios to fill in the blanks ala Ad-Libs, and you have yourself a "Choose your own adventure ad-libs of Tycho says crazy words". I dunno... or any game suitable for a few hundred people to play... just put it up on a big projected screen in the line room or something... maybe a good stress test for them