We have now published presentations from OpenSQLCamp at Percona Presentation pages
Percona MySQL Patches is a great presentation to see Percona Patches for MySQL in action, showing how you can use them to get more understanding of your server load and improve server performance, as well as how they can improve performance all together.
Sphinx full-text search engine is presentation about Sphinx Search Engine talking a bit about architecture, performance and new features in Sphinx 0.9.9
