here is a few apps i found for facebook for mac osx, nice little collection here http://www.applesource.com.au/software/soa/Mac-plugins-for-Facebook/0,2000070819,339287565,00.htm
itunes sync app for facebook -let your m8’s know what your playing
http://www.facebook.com/apps/application.php?id=2387314669&b&ref=pd
Facebook app!!
http://www.new.facebook.com/group.php?gid=28942565962&ref=mf
Check them out fbook is a quaity app with growl notifications!!