Handle arrays effortlessly. Something you didn't know you needed.
Finally, business logic free templates.
Collapsible dumps and prettier/more useful error pages.
Change default behavior with various filters. Extend classes and override whatever you'd like.
Register custom post types and option pages with ease.
Say goodbye to "The Loop". Meet Object Oriented Programming 101.
Explicitly pass data to templates with ease. Theme-overridable templates in your plugin.