Deliberate practice
Refactoring Legacy Code - true story
Writing code you won't hate tomorrow
Object Calisthenics Adapted for PHP
Your code sucks, let's fix it! - php|tek13
Your code sucks, let's fix it - DPC UnCon
Your code sucks, let's fix it
Your code sucks, let's fix it (CakeFest2012)
Your code sucks, let's fix it - PHP Master Series 2012
You code sucks, let's fix it
Object Calisthenics