New to 2009 is the default icon mode for the drawing tool buttons. You know what these are, the SNAP GRID ORTHO POLAR OSNAP, etc. buttons down in the status bar. They take up less room as icons, but you will need to figure out what each one does.
Out of the box, they look like this:
If you right click on any button, you will get this menu:
Uncheck the Use Icons item to restore the previous TEXT buttons, like this:
Polar Tracking, Object Snap, and Object Tracking include a context menu to quickly change settings without having to open a dialog.