I have been interested in origami for most of my life, at least since I was four. I started with the same basic things that most people make at some point, and have been slowly getting better, to the point where I now design origami models. Here's a couple things I made in the last couple weeks.
http://img300.imageshack.us/img300/6822/dragonrz8.gif
Dragon
http://img444.imageshack.us/img444/424/mouseky8.gif
Mouse
I'll upload a couple more models in the next day or two. Also, if anyone wants me to try and design something in particular, just suggest it, and I'll try to make it and upload it here.