I Can't Get Mario Galaxy to be Displayed in 16:9 Aspect Ratio

[AdmiralCurtiss]

My guess is you have a custom (user) Mario Galaxy GameINI that forces the aspect ratio to 4:3 for some reason. Can you check that? Right-click Mario Galaxy in the game list, go to Properties, then under the Game Config tab switch to the Editor sub-tab and show us what's there, if anything.