Bike fitment, saddle height, and knee strain

So, having a better idea of what's going on with my knees, I am searching for more information on proper saddle height. Granted, most information is based on road bikes, with mountain bikes being more upright, but it should be a good place to start.

Size chart
http://www.prodigalchild.net/Bicycle6.htm

Dave Moulton's blog post on sizing
http://davesbikeblog.blogspot.com/2006/02/different-thought-on-frame-sizing.html

As I find more stuff, I will add it. Although I might just create more posts. Who knows...