Missing tutorials

Describe here all your fantasy tutorials... tutorials you either wish you had the time to write or that somebody else would do

Haskell for MacOS fans

We've got:

• HoC - A Haskell to Objective C Binding
• An Xcode plugin for Haskell

What I would really like to see is a tutorial for Haskell hacking on a Mac, using Haskell to build those insanely great Mac applications. There's two ways you could go about it. One might be to build it as a Haskell-for-Objective-C programmers, thing. Another might be MacOS programming for Haskellers, with just enough Objective C for you get by. Or a third approach still would be a super super friendly, graphical, tutorial for people who have never programmed in either. I was thinking along the lines of Learn Cocoa, but using Haskell!