The concept of a toolkit that uses code syntactically similar to Objective-C but works in all of today's major browsers is … well it's certainly different. Cappucino promises that when you're building a web application "you don't need to concern yourself with the complexities of traditional web technologies like HTML, CSS, or even the DOM." Keep in mind we're talking about web apps here, not sites. But still, this is set to change the game in some unexpected ways.
Whaddya think?