http://download.tangent.org/talks/Getting%20More%20Out%20of%20Memcached%20with%20Libmemecached.mp3
The Study guide I mention can be found here:
http://download.tangent.org/talks/Memcached%20Study.pdf
The talk is general in nature, but it does have some points on how to work with MySQL and Memcached in the same applications stack.