This looks very interesting indeed. I particularly like the fact that they're not trying to replace JS by using it as a compiler for a higher level language (as with Coffee Script, Dart etc.), and also I like how they've retrofitted the interfaces for the DOM, node.js, MongoDB etc. That's a nice touch.<p>The lambda syntax from C# is also nice to see, and something I miss when writing JS.<p>I think the solo presentation is better here: <a href="http://channel9.msdn.com/posts/Anders-Hejlsberg-Introducing-TypeScript" rel="nofollow">http://channel9.msdn.com/posts/Anders-Hejlsberg-Introducing-...</a>