http://www.zotero.org/
May be useful for the students here.
I've been using this for quite a while and it's definitely neat for storing references to papers.
Oh, this is nice.
http://www.courthousenews.com/2008/09/17/Reuters_Says_George_Mason_University_Is_Handing_Out_Its_Proprietary_Software.htm
Zotero is open source, so I doubt that this will do much even if the lawsuit comes through. Somebody else can just pick it up where they left it.
I've been using it, not just for my research, but for storing records of all the books I have read.