I've looked anywhere, and can't find anything that would relate to Expose's screen saver hot corner. 

thanks for your post. Invoking a screensaver via Remote Buddy is 
currently not supported. It's a good idea, though and I've added it 
to the ToDo list.

You can use the virtual mouse though, to reach for the respective 
corner of your screen and activate it that way.

Best regards, 
Felix 

I've been trying again and again to figure out how to invoke one application from Remote Buddy.

In order to activate the screen saver on OS X, it is actually an application located at:

/System/Library/Frameworks/Screensaver.framework/Versions/A/Resources/ScreenSaverEngine.app

Last edited: 15.08.2006 06:16:46 

one way to invoke the screensaver already now would be to

1) enter the Behaviour Construction Kit 
2) create a new action and check the "global" checkbox 
3) add an AppleScript actor with this contents

tell application "ScreenSaverEngine" to activate

4) since actions can not yet be placed in the menu by the user, map a 
button in a behaviour of your choice to that newly created action.

Hope that helps.

Best regards, 
Felix