KavaScript is a project that claims to "breathe new life into JavaScript by extending it with syntax and features inspired by expressive, dynamic languages like Ruby and Perl." It's definitely interesting. It adds interesting features like string interpolation, new string and array literals, closures, macros, and file includes. I don't really expect this to see wide adoption in web development, as JavaScript is already a fairly powerful language and every extra kilobyte of library code serves to bog down the user experience a bit more, but it's an intriguing project nonetheless.