Quite intelligent.
I really liked it all, the humour is just fantastic, not just random crap spawning all over the screen, the animations were quite good indeed, if you done all of that by yourself, the quality of the characters could be improved by drawing darker lines on tthe border of the eyes, "hands" and even the characters themselves, as for the policemen, lighter lines, so you actually get a better feeling of movement, which could be seen on the eyes' movements.
As previously said, the voices don't 100% match animations at the ending, just make a little timing fix on that.
Overall is very good.