Finally found a great article on this after some searching and finding really outdated articles!

http://msdn.microsoft.com/en-us/library/bb613576.aspx

<Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:sys="clr-namespace:System;assembly=mscorlib" 
  SizeToContent="WidthAndHeight" 
  Title="Show Enums in a ListBox using Binding">
 
  <Window.Resources>
    <ObjectDataProvider MethodName="GetValues"
                        ObjectType="{x:Type sys:Enum}"
                        x:Key="AlignmentValues">
      <ObjectDataProvider.MethodParameters>
        <x:Type TypeName="HorizontalAlignment" />
      </ObjectDataProvider.MethodParameters>
    </ObjectDataProvider>
  </Window.Resources>
 
  <Border Margin="10" BorderBrush="Aqua"
          BorderThickness="3" Padding="8">
    <StackPanel Width="300">
      <TextBlock>Choose the HorizontalAlignment value of the Button:</TextBlock>
      <ListBox Name="myComboBox" SelectedIndex="0" Margin="8"
               ItemsSource="{Binding Source={StaticResource AlignmentValues}}"/>
      <Button Content="Click Me!"
              HorizontalAlignment="{Binding ElementName=myComboBox,
                                            Path=SelectedItem}"/>
    </StackPanel>
  </Border>
</Window>

 

Something that might not be readily apparent to you is the use of the <x:Type /> markup extension.  Documented here.  I needed to figure this one out because I was binding my own enum instead of simply a CLR enum.  The thing to know is that you must include the namespace for your assembly that contains your enum in the XAML markup:

xmlns:warehouse="clr-namespace:Warehouse.Model;assembly=Warehouse.Model"

I named my namespace ‘warehouse’ here and referenced the assembly and namespace that contains my enum.

Next, you must reference the type with namespace prefix like so:

<x:Type TypeName="warehouse:DockReceiptTypeEnum" />

Now the beginning of my XAML looks like this and it works great!

<Window x:Class="Warehouse.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:sys="clr-namespace:System;assembly=mscorlib" 
    xmlns:warehouse="clr-namespace:Warehouse.Model;assembly=Warehouse.Model"
    Title="Dock Receipts" Height="478" Width="957" xmlns:my="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView">
    <Window.Resources>
        <ObjectDataProvider MethodName="GetValues"
                        ObjectType="{x:Type sys:Enum}"
                        x:Key="ReceiptTypeEnum">
            <ObjectDataProvider.MethodParameters>
                <x:Type TypeName="warehouse:DockReceiptTypeEnum" />
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </Window.Resources>