We arrived at the scheduled start time (20:00) but Discovery atop the crawler-transporter had already begun its journey (NASA sites say 7:23 p.m.). We stayed for about an hour, admiring the giant shuttle-shaped shadow cast on the VAB exterior wall by a spotlight as well as the International Space Station, which just so happened to cross right above us at around 8:30.
Here's a picture from my phone – I will post some better ones later.
Can't wait for launch (November 1 at 4:40 pm is the current target) and the mission (Permanent Multipurpose Module and Robonaut 2 are headed to the ISS). See www.nasa.gov/shuttle for lots more info.