Building Option Menu Extends Off Top Of Screen
You can see the info bar (gold/population/food-per-turn/etc.) that occupies the very most top of the screen, to show how the building menu extends too high. There's just that one row of options that are partially cut off, and they can be moused-over to select/tooltip them.
http://dl.dropbox.com/u/5475789/BuildingOptionMenuExtendsOffTopOfScreen.PNG