The Bakery (the CakePHP site) has another great long list of tutorials, articles and helpers covering tons of different subjects posted recently, including:

• ConfComponent DB based configuration Tutorial
• ConfComponent DB based configuration
• Installing cakePHP on Ubuntu
• PHPMailer with native API for PHP 5.x
• Optimizing your CakePHP elements and views with caching
• Coding a self-join in a cake application
• Excel xls helper
• Memcache wrapper class
• Memcache helper
• Memcache component
• Creating Reusable Elements with requestAction
• Geocoding in CakePHP
• Converting thtml files to tpl

Tons of great topics in there like geocoding, Excel file creation, working with memcache, caching, PHPMailer, and the ConfComponent DB.