I want to add more notes to this weeks post that will help. See this post for the beginning of this install. So, my focus will be primarily on the connection of the 5000s to the core switches. In this case, I happened to be connecting my two 5000s to two 6500s for redundancy.
It is really important that you make the all port-channels to the core a part of the same 'port-channel number'. For example, 'interface port-channel 5'. Here is a drawing that the TAC guy drew up for me.
For some config examples without explanations, click here.