If you have an AppController object in your nib file, and it's not File's Owner, but you want to use bindings with it, you can use an NSObjectController :
By setting the content value in
- Make an IBOutlet in your controller to point to the NSObjectController
- Drag an NSObjectController into the nib
- Add the names of the properties you're going to be binding with
- in AppController's
[objController setContent: self];
awakeFromNibhelps prevent a retain cycle which can lead to memory leaks.