Orientation Control

[Over50Droid]

Has anyone found an app that will allow you to control whether the screen changes from portrait to landscape for particular apps? An example would be if I was using the calculator which I use in portrait, I don't want the screen changing if I move my hand inadvertently. I don't like watching or waiting for the screen to go back to portrait. I do want to keep auto orientation for other things like brosing or the Marketplace.

Thanks