Pretty funny sketch! I'm not quite sure why y ou decided to use the distorted voice for the crook, or the computer-generated voice for the copper, and I really would've liked to see some better work in voice acting. I feel like that is pretty much necessary considering how short this flick is.
Animation is all right, but you could definitely have done some more work on the characters, something as simple as a bit of shading would've made it all a whole lot better. The scenery is shaded, so why not do the same with the characters?