I liked the blog post about Combining 2-D and 3-D techniques very much, but the others are interesting as well for game makers:
http://blog.rough-sea.com/

http://www.puppenheim.org/
http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt