Way to go!
This definitely had all the element that you'd find in an amazing flash; great graphics, cool songs and sound effects, some violence and obviously humour. The only thing it's missing is of course length. I was dissapointed to hear this was only 16 seconds but i was also amazed at what you accomplished in such a short amount of time. This bunny seems like a funny character so if you make a series try to include him in it.
Great job again man! This flash will do well despite its length. Just imagine how good it could be if it was longer.... 4/5