My very fist drawing on a computer was done in MS Paint. I took forever to do and I wish I still had it. I did it block by block as I called it back then, little did I know that pixel art would evolve so much. I'm often stunned when I see some of the artwork that can be created in this style.
After all these years, and the advancements in graphics programs, I still love to look at pixel art. Check out the link I provided. It's ISOCITY, a collection of pixel art by artists from around the world. There are some fantastic pieces in there. If you know of any cool sites that showcase pixel art, post a link here. I know devianArt has some great stuff also.