Yi Haskell?

The Yi Editor looks pretty fun to play around with.  It’s an open source text editor written in Haskell.  

http://www.haskell.org/haskellwiki/Yi

Haskell Resource – How to learn Haksell

This article was a pretty good read and has some great resources listed on learning the Haksell language.

How to learn Haskell
http://acm.wustl.edu/functional/haskell.php