Used with EventTriggers
<UserControl.Triggers>
     <EventTrigger RoutedEvent="ToggleButton.Checked" SourceName="CheckboxName">
          <BeginStoryboard x:Name="OnChecked_BeginStoryboard" Storyboard="{StaticResource ShowList}"/>
     </EventTrigger>
     <EventTrigger RoutedEvent="ToggleButton.Unchecked" SourceName="CheckboxName">
          <BeginStoryboard x:Name="OnChecked_BeginStoryboard" Storyboard="{StaticResource HideList}"/>
     </EventTrigger>
</UserControl.Triggers>
ObjectAnimationUsingKeyFrames (with a DiscreteObjectKeyFrame)
Changing the ItemsSource:
<Storyboard x:key="ItemsSourceChange">
     <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MyList"  Storyboard.TargetProperty="ItemsSource" Duration="0:0:0">
          <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{Binding Source={StaticResource Data}}"/>
     </ObjectAnimationUsingKeyFrames>
</Storyboard>
Changing the Style:
<Storyboard x:key="ItemsSourceChange">
     <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MyList"  Storyboard.TargetProperty="Style" Duration="0:0:0">
          <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{Binding Source={StaticResource ListStyle}}"/>
     </ObjectAnimationUsingKeyFrames>
</Storyboard>
Changing the Visibility:
<Storyboard x:key="ShowList">
     <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MyList"  Storyboard.TargetProperty="(UIElement.Visibility)" Duration="0:0:0">
          <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{x:Static Visibility.Visible}"/>
     </ObjectAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:key="HideList">
     <ObjectAnimationUsingKeyFrames Storyboard.TargetName="MyList"  Storyboard.TargetProperty="(UIElement.Visibility)" Duration="0:0:0">
          <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{x:Static Visibility.Collapsed}"/>
     </ObjectAnimationUsingKeyFrames>
</Storyboard>
BooleanAnimationUsingKeyFrames (with a DiscreteBooleanKeyFrame)
Changing the IsChecked on a checkbox:
<Storyboard x:key="ChangeIsChecked">
     <BooleanAnimationUsingKeyFrames Storyboard.TargetName="CheckBox2"  Storyboard.TargetProperty="IsChecked" Duration="0:0:0">
          <DiscreteBooleanKeyFrame KeyTime="0:0:0" Value="False"/>
     </BooleanAnimationUsingKeyFrames >
</Storyboard>
