I think so, but I am biased (lead dev and designer :P)

The entire site is written in Elm (excluding the code editor which relies on CodeMirror). If you click the "View Page Source" in the top right corner of every page, you can see the full source for it.

For example: http://elm-lang.org/edit/Examples.elm

Here's the [full source for the website](https://github.com/evancz/elm-lang.org/tree/master/public) and a [game of Pong](http://elm-lang.org/blog/games-in-elm/part-0/Making-Pong.htm...).