Just interested in who is fan of XYZ Fanpage usually only the Admin have now full acess to the fan members . With a litle trick you can view them too . Just go to the Page turn off Javascript and enter these url with the Fan Page Id you would like to see the fans. Change the Xxx without the Fanpage ID. Its the usual result that the new opengraph Api will show too you only on the front end the link is not visible to standard user.

https://www.facebook.com/social_graph.php?node_id=XXXXXXXXXXXXXXXXXX&class=FanManager&_fb_noscript=1

And yes these is working for every Fanpage even the Wiki Community Pages from Facebook that show every person how talk about a specific topic. Like Social Media or any topic that is often used by the user. It could be helpful for building your Fanbase at the start .