Been there, seen that
The graphics were decent. If you want to improve, I'd suggest more extensive shading and colouring. Also, some of your lines are distorted, I suggest setting down the smoothing on your brushes.
The thing you really got right was the menu. Otherwise the sounds were spot on with the talking, but I didn't enjoy the voices as they shared no similarities with the characters (which is a hard task, and I must credit the VA's for trying).
The VA's should also consider their tone, and I've noticed it changes a lot doing the movie.
This is of course your own choice, but consider moving on to your own storylines in the future, and stop making video game parodies.