I found my original post from two years ago on this subject. I didn't tell the story then, so consider this an update. ;-)
This is an old one, we used ettercap to sniff the wifi at h2k2.
A lot of fun was had in those few days.
A few years later, I found this video and checked the user/pass reading from the video. They worked! I contacted him to change his password. He was shocked about the event, and I was shocked nobody has seen the video and messed with him. Instead of being angry he felt it was stupid of him to check his email at a hacker's conference.
I should also add it was outlook web access 2000(?) without ssl. But if it was SSL I could have MITMed it. ;-) I even think back then it would have been SSLv3.0 which you could just break.
Aww, Those were the days.