Lambda the Ultimate

Macromedia flex has a very powerfull data-binding mechanism. When we started to use Flex we had heaps of code to manage events. We were also suspicious about mixing content and behaviour. What a mistake!
Progressivly we've been using the declarative syntax of data-binding and our amount of code has reduced enourmously.
In fact we don't event think of it as code, we think of it as magic statements that just glue everything :)