Here's 245 face files that you can use as you wish. If you want to extract and modify the textures you'll need facegen.
Shareware is here:
http://www.facegen.com/

Use Fg2ob to get the faces in game:

http://web.t-online.hu/laga/zennorious/oblivion/downloads/fg2ob/fg2ob.zip

Tutorial here:
http://www.bethsoft.com/bgsforums/index.php?showtopic=463903

It's easy after a couple of times. Fgfiles made from picture from the web. I made all except Orlando Bloom, Sean Connery, ViggoMortensen,Josh Holloway, Linda Carter, J.Connelly, and Jessica Alba which I downloaded from the now defunct The Oblivion Face Library website and they were free for non-commercial uses. I will upload some more if these are useful to people? Faces are of various people including Melinda Clark, Hillary Duff, Jennifer Anniston, Britney Spears, Gillian Anderson, Samantha Fox and others. This represents many hours of work and is offered as is and just for fun.