We wrap up our time travel arc with a discussion of the morality of time travel, focusing specifically on Back to the Future. And we run down the week in geek, including the Space Shuttle Discovery’s final liftoff, a possible Blade Runner sequel, a possible RoboCop “reboot,” and lots more. If you haven’t yet RSVP’d for the 2011 GWC International Meetup in Texas, time’s running out! We’ve still got space, though, and would love to meet you. Check the forum for details.