You got me hooked.
I won't say it was the best thing on the planet. It wasn't. It was pretty short, didn't have much action, and not too much of the storyline was revealed. BUT, I still liked it. I haven't seen too many animations with NES sprites, so that's a bit unique. Also, although I know it might ruin the feel a bit, I would suggest putting some better music into it sometimes. I know, I know. You don't have to if you really don't want to.
Even though the storyline didn't seem too great, I still really liked this. It seemed sort of unprofessional, and yet professional at the same time. It's kinda weird. :P
Personally, I thought the speech bubbles weren't too bad the way they were. But If you wanted to change them, that would be fine too.
Also, you mmight want to make a replay button, and maybe some sort of menu (although it's not necessary). If you don't know much actionscript, toss me a PM or something.
Anyway, good luck, and I hope to see more from you!