So I finally saw Luther the anger translator in action and I laughed. Hard.
Here's the first introduction of Luther, also a winner (and NSFW due to f-bombs and the like)...
NPR had a good piece on the history of Presidential impersonations and Obama in particular last week.
More from Key & Peele here, I haven't watched anything other than a couple of the Luther clips though so don't take that as an endorsement just yet.