Like Pogue said: "First couple times I saw this, I would have bet you money that the beatbox sounds were audio samples, added during the video editing. But once I visited the guy’s Web site, I realized that he’s probably the world’s greatest beatboxer—and that he probably made all those sounds himself as the camera rolled."
Beardyman is the name of the guy cooking the "Electro Funk Daddy Superstar Break".
I find lots of subtle things that make the performance great: the overall rhythm of his delivery, how he switches from narrative to beat boxing and back; brilliant writing, like when he filters the low and middle frequencies out of white noise using a household sieve; and the believably "enthusiastic" style of some show host in a routine cooking segment, all of which when combined to his virtuoso command of beat boxing technique gives a rather surreal effect.
There are also things which to truly appreciate you have to now a bit about the history of music technology. For example his Roland 808 clap sounds exactly like the real thing from 1980s. Also, how he feels the need to include both a 808 clap and a 909 clap snare in the recipe and then perfectly renders the sonical differences of those two devices in the beat.
Also he does simultaneous stretching and low pass filtering of the "signal" when he slows down the beat. Not to mention doing it while playing the beat backwards!