A beautiful new iPad app from Oliver Reichenstein and Information Architects and designed with the sole purpose of being a top-notch writing environment:

Many professional writers use SimpleText or Textedit because these are the only writing programs that are totally distraction free. But text editors are not perfect. That’s why we made Writer.

Additional cleverness involves a monospace font optimized for the iPad, Nitti Light, and syncing with Dropbox.

Writer for iPad