http://bits.blogs.nytimes.com/2011/10/27/codecademy-lands-2-5-million-from-investors/
http://rubymonk.com is also doing interactive in-browser code lessons.
Codeacademy is teaching JS, Rubymonk is teaching Ruby.
Both services are free, for now.
--
Alex Chaffee - al...@stinky.com
http://alexchaffee.com
http://twitter.com/alexch