Longtime Danes fans (or just those of us who owned Little Women on VHS) are quite familiar with the World Famous Claire Danes Cry Face: scrunched up, quivering chin, eyes from which tears flow effortlessly, a forehead that crumples without a moments notice. You have to experience it to really understand it.
(via Help Support The Claire Danes Cry Face Project | Slacktory)
There is also a tumblr