Good, fluid animation, good music.
Normally, content with Pico and Nene is pretty good, aside from a few blams here and there.
This is above the norm.
Excellent use of cameos, background jokes, etc. Love the animation style, true to about everything there is that's "pico".
Convict is a hell of a character, by the way. Some might consider him cheap, but it's a cool concept. :D