I put all the code I've previously posted on the CakePHP Bakery onto my GitHub account. A lot of the code has been updated so that it works on RC3.

Code

Asset Helper
HTML Cache
JavaScript Validation
Layout Switcher Component
Simplepie Component

Working example can be seen at sandbox2.pseudocoder.com
There is some other code, but I haven't checked it yet to see if it'll work with RC3. Use at your own risk.