When my Mac (Mac OS X 10.6.2, Snow Leopard) goes to display save mode, the mouse cursor always ends up in the top left corner.
This is annoying, because this interferes with Elgato EyeTV's fullscreen mode. When the cursor is in the top left corner, the menu bar stays in the foreground.
Ctrl-Shift-Eject. – Daniel Beck May 1 '11 at 8:21