Resources for Face Detection

I always had some interest in working with faces :B - yeah face detection and recognition. following is a list I have found once on the internet; thought might be helpful for me someday when I'll get some time to work with seriously :S.
Face detection (or more generally Image Matching resources):
AForge.net
Facedectection in C# with less than 50 LoC
http://friism.com/facedectection-in-c-with-less-than-50-loc
Face Detection in (pure) C#
http://askernest.com/archive/2008/05/03/face-detection-in-c.aspx
Easy to use Wrapper (DLL) for Intel’s OpenCV Library with Examples
http://www.codeproject.com/KB/cs/Intel_OpenCV.aspx
OpenCV (Open Source Computer Vision) for C#
http://coolthingoftheday.blogspot.com/2008/08/opencv-open-source-computer-vision-for.html
OpenCVDotNet
http://code.google.com/p/opencvdotnet/
Emgu CV
http://www.emgu.com/wiki/index.php/Main_Page
SharperCV Project
http://www.cs.ru.ac.za/research/groups/SharperCV/
[C#] OpenCV
http://www.dotblogs.com.tw/chou/archive/2009/06/13/8812.aspx
Webcam in C#: with OpenCVDotNet
http://haryoktav.wordpress.com/2008/12/12/webcam-in-c/
OpenCV / SURF How to generate a image hash / fingerprint / signature out of the descriptors?
http://stackoverflow.com/questions/2146542/opencv-surf-how-to-generate-a-image-hash-fingerprint-signature-out-of-the-d
Face Detection and Identification
http://www.emgu.com/forum/viewtopic.php?f=7&t=11&start=10
Phase Correlation in OpenCV
http://nashruddin.com/phase-correlation-function-in-opencv.html
SURF and OpenSURF
http://amitsarangi.wordpress.com/tag/opencv-features/

A proprietary tool but had a lot of fun with the following tool:
http://www.luxand.com/

Computer Vision and Artificial Inteligence

I's studying computer vission for couple of days and as a open source fan follwing are the libraries that I though I should work with :

• AForge.Net: AForge.NET is a C# framework designed for developers and researchers in the fields of Computer Vision and Artificial Intelligence - image processing, neural networks, genetic algorithms, machine learning, robotics, etc.
• OpenCV: OpenCV is a computer vision library originally developed by Intel. It is free for commercial and research use under a BSD license. The library is cross-platform, and runs on Windows, Mac OS X, Linux, PSP, VCRT (Real-Time OS on Smart camera) and other embedded devices. It focuses mainly on real-time image processing, as such, if it finds Intel's Integrated Performance Primitives on the system, it will use these commercial optimized routines to accelerate itself. Released under the terms of the BSD license, OpenCV is open source software.
• EmguCV:EmguCV is a cross platform .Net wrapper to the Intel OpenCV image processing library. Allowing OpenCV functions to be called from .NET compatible languages such as C#, VB, VC++, IronPython etc. The wrapper can be compiled in Mono and run on Linux / Mac OS X.

Reference:

• AForge.Net
• OpenCV
• EmguCV