There's a new Web 2.0 genealogy site called Famillion whose founder hopes to have "the world's Jewish population mapped out by the end of the year, and the entire Western world mapped out in two years." I'm more interested in mapping out a path to Brad Pitt's girlfriend.
Famillion is the only genealogical system that allows you to find unknown pathways to any other person in the world. You might discover family members you never knew you had or find connections to the world's Albert Einsteins, Madonnas and Bill Gates. You may find yourself chatting with Angelina Jolie. As the Famillion family grows, your possibilities become limitless.