I'm sure you are always looking for good free models so I start this post to keep the links in a safe place.
Here is a Russian web site I found some days ago and that has pretty cool free models (beware : only low poly meshes are free!!!)
http://artblock.ru/html/downloadmodels.htm
If you have good links...don't hesitate.
Precision : the best will be to give links for 3ds or .x models that may be easily processed in blender and exported in .x format as this is our main work.