While you're in Flash why not try some transition effects when clicking on pixel pieces?  There's some simple stuff you can do that would really add some flavor.

Do you have something specific in mind?
I try to keep the size relatively low so...
Hmm... of course it would be very cool to have some little animation for every button but that would take way too much time
But something little and nice maybe a change between b/w and color when you hover over it...
But I guess you mean that the pixelpiece should not simply appear after hitting a button right?

Yes, a simple fade-in will increase the size by only a few bytes I think

Theres a lot of good work there: As for the site. I wasn't liking the navigation for a while... It's growing on me though.

Like mentioned, sproose something up a lil. Like a fade-in script, also, maybe increasing the size of it? On my res. It's small, and very plain. It needs something maybe header + footer... Yea, banner power!

I'm also loving the backgrounds, they are awsome. There's also some very creative forms of dithering in some of your backgrounds. My Fav: "Sunken"  -- Keep up the good work

Niss:  Check out movie sites, art/design sites for some ideas for transitions for switching between sections or popping up art. If you need help implementing a transition lemme know.