Not officially, however I just looked for and failed to find an old thread where some users had successfully used aftermarket software to reinstate the old menus. So I searched and found this:
Well, you can do the following:
1. Right Click around the menu-bar and Minimize the Ribbon
2. Right Click around the menu-bar and Show the Quick Access Toolbar Below the Ribbon
3. Right Click the Quick Access Bar and Customize Quick Access Toolbar ... to add the icons you'd like to see
I know this isn't what you wanted, but it might help to make the ribbon more usable for you:
1. (Optional and only if using XL 2010) minimise the ribbon with the ^ button in the top right corner.
2. Press and release the Alt key. The shortcut key for each tab will appear next to each tab label, and when you select a tab by pressing the indicated key the ribbon for that tab appears with the shortcut key for each option.
In short, pressing and releasing the Alt key makes the ribbon work much like a menu system.