The WPF Ribbon control can be downloaded from the Office UI Licensing site. One of its most interesting features is its application menu.

You can create menus and sub menus to match the look of an office 2007 application.

Simply add a new RibbonApplicationMenuItem to the ApplicationMenu.
You can then create a combination of sub menu items by placing them inside other Menu Items

<r:Ribbon.ApplicationMenu>

                <r:RibbonApplicationMenu>

                    <r:RibbonApplicationMenu.Command>

                        <r:RibbonCommand

                            Executed="OnCloseApplication"

                            LabelTitle="Application Button"

                            LabelDescription="Close the application."

                            SmallImageSource="images/Coins.png"

                            LargeImageSource="images/Coins.png"

                            ToolTipTitle="Personal Finance Manager"

                            ToolTipDescription="Click here to open or save a checkbook register." />

                    </r:RibbonApplicationMenu.Command>

                    <r:RibbonApplicationMenuItem Height="200">

                        <r:RibbonApplicationMenuItem.Command>

                            <r:RibbonCommand

                                LabelTitle="Close"

                                 LargeImageSource="images/Coins.png"

                                 LabelDescription="Close The Application"

                                Executed="OnCloseApplication" />

                        </r:RibbonApplicationMenuItem.Command>

                        <r:RibbonApplicationMenuItem BorderBrush="Aqua" BorderThickness="4" Height="50">

                            <r:RibbonApplicationMenuItem.Command>

                                <r:RibbonCommand

                                LargeImageSource="images/Backup.png"

                                LabelDescription="Close With saving"

                                Executed="OnCloseApplication" />

                            </r:RibbonApplicationMenuItem.Command>

                        </r:RibbonApplicationMenuItem>

                        <r:RibbonApplicationMenuItem BorderBrush="Aqua" BorderThickness="4" Height="50">

                            <r:RibbonApplicationMenuItem.Command>

                                <r:RibbonCommand

                                LargeImageSource="images/delete.png"

                                LabelDescription="Close Without saving"

                                Executed="OnCloseApplication" />

                            </r:RibbonApplicationMenuItem.Command>

                        </r:RibbonApplicationMenuItem>

                    </r:RibbonApplicationMenuItem>

                </r:RibbonApplicationMenu>

            </r:Ribbon.ApplicationMenu>

Simple and looks like an office application.