Some suggestions
 

I think you should:
- rename the tutorial files in a standard way
- make some learning path that someone can look at to know where he should go next according to his objective (like ont he back of Wrox books)
- convert everything in quicktime for mac user (I know about the threads about this and the reason, just repeating it ;-) )
- keep integrating stuff from one tutorial into the next (ex: appache mod -> appache texture). This is a great idea and help us to see the complete project
- keep doing these great video! As soon as I finish the freebies, I will definatly get a few.

nice ideas ... thx for the input

one thing I will say is that all the new ones now are in DiVX - this is a better codec to use and mac can also view these videos