Unicycleboy issued somewhat of a challenge, and I took it.
To do a video entirely in an impression, so I did Smeagol/Gollum from Lord of the Rings. It was that, or Will Ferrel's Harry Caray from SNL, but I don't have the crazy glasses or hair for that... But this was fun to make, and I'd like to see others give it a shot. Even if you don't do the best impression, you can stay in character and use their mannerisms and such.
Here is my video: