For students of Character Modelling for games. Shows a comparison of some free models and their respective LOD models.
Models:
Kila - http://www.antcgi.com/2014/06/03/free-model-15-kila-lods-rig-dynamics/
Team Fortress 2 - http://www.teamfortress.com/workshop/
Dota 2 - http://www.dota2.com/workshop/requirements#geometry