Average Hot or Not Faces By Rating — A photographic composition of the average of many faces on the Hot or Not web site, grouped by rating.  http://flickr.com/photos/40702206@N00/146532556

 BeautyCheck — Research into why some faces are more beautiful than others.  http://www.uni-regensburg.de/Fakultaeten/phil_Fak_II/Psychologie/Psy_II/beautycheck/englis
h/index.htm

 CAL/PAL FacesDB — A large database of face photos, taken in a variety of expressions. http://agingmind.cns.uiuc.edu/facedb/

 Face Beautification — Research into making faces more beautiful. Given an image, their technique will make subtle modifications that supposedly make the face more beautiful. Unfortunately you cannot upload your own faces. http://www.cs.tau.ac.il/~tommer/beautification/

 Face Transformer — A free face transformer.  http://www.dcs.st-and.ac.uk/~morph/Transformer/

 FaceOfTomorrow.com — A study of the so-called "face of tomorrow", a face formed by averaging characteristics of many different races. http://www.faceoftomorrow.com/home.asp

 FaceResearch.org — Several different face-transforming tools and face attractiveness surveys. Register for free to upload your own photos and average them or transform them. Create an old version of yourself. http://www.faceresearch.org/

 FlashFace — Not really facial research per se, but a Flash-based tool to create mugshot sketches. http://flashface.ctapt.de/

 MyHeritage Face Recognition — Upload a photo and it will find celebrities that look like you. http://www.myheritage.com/FP/Company/tryFaceRecognition.php

 ThatsMyFace — Upload a front and profile view of yourself to get lots of statistics about your face, and also to order products such as your face 3-D model on a t-shirt or inside little crystals. http://www.thatsmyface.com/