BuddyPress.org

@wordpressfan Are you looking for an events plugin thad adds not only events and a calendar but lets people rsvp and “attend” events? If so, You can use Erwin’s http://www.erwingerrits.com/?page_id=799 or head on over to the wpmu.org crew and throw down money for theirs (not an endorsement since the make you pay without even a test drive, not my game)