ViRGE
Elite Member, Moderator Emeritus
A nice summary of anti-aliasing and under what scenarios the various anti-aliasing methods can fail. It's nothing groundbreaking, but if there's anything you didn't quite understand about AA before, there's a good chance there's a summary explanation in here.
http://www.beyond3d.com/content/articles/122
http://www.beyond3d.com/content/articles/122