I had the pleasure of hearing Eileen Collins talk once and it was awesome. Incredible story teller and very funny.
Told a story about how they lost a bag of orange juice on the ISS and couldn't find it. Wasn't until they were trying to detatch (module? Something else? Not sure) that they found it by pushing down on a pedal and it exploded. In the moment everyone was terrified, but once they found it, it became a pretty big joke of their mission. Apparently their debrief was pretty much just being yelled at for the orange juice.