Ok, not all of them were hotmail passwords, but that's how they are being talked about in the media
Thousands of Hotmail passwords leaked online
I did some initial analysis of the list which can be found below:
Reusable Security: 10k Hotmail Passwords
I haven't had much time to go over them, but I'll try to post some follow up info, such as the effectiveness of different input dictionaries, a more detailed analysis of word mangling rules used, etc, later. If there is any specific information people are interested in, (with the exception of where to grab the list, sorry I'm not going to repost that), please let me know.