I would love to see a view button added to the status bar for Notes View in
PowerPoint.  When I am creating a presentation where I am using notes, I
prefer to add those notes while in Notes Page View.  I also like to toggle
back and forth often between Notes Page View and Normal View.  Getting to
Normal View while in Notes Page View is easy.  (Double-clicking on the slide
or clicking on the Normal View button are the two methods I use most often.)  
But I have yet to find more than one way to navigate from any view to Notes
View.  That is, in 2007, activate the View tab on the ribbon, then click on
the Notes Page tool in the Presentation Views group.  To me, that is
cumbersome at best.

An alternative would be to offer a keyboard shortcut.  This would be
beneficial in that while I'm on the Notes Page View my hands are likely to
already be on the keyboard because I'm typing text in the Notes area.