This is the first of his videos I watched:
And I was going to post a whole bunch of his stuff, but...it's all amazing, and I think you should discover it in the order intended for you, and not for me. Except you must watch this one, too:
Now I am going to say "You're welcome" and take my leave.
(Also, watch the Nyan Cat, Pokemon, and Super Mario Bros if you somehow missed them on your journey.)