Over the years, the most amusing things people have commented on have been that none of my fan fics have any Mary Sue's in them. For the un-enlightened, the Mary Sue being the auther written into the story and instantly loved and always right (generally breaking the characters of every person he or she meets in the process). I dont do this generally under the understanding that if Iw as put into most of my fandoms, I'd probably be very quickly killed due to having no combat experince and my favorite fandoms generally being fairly rough and violent, not at all the place for a thin skinned, pale irish girl looking for a good laugh. I appreciate the people who read these stories and realize I'm not in them.
However, the majority of my origional fiction is where I put myself. I have six characters that all draw upon parts of myself that dont get much limelight in the real world. That being said, msot their fiction isnt actually avalible for veiwng, largely due to the fundamental udnerstanding that despite 14 years of writing a little something evry day, most the stories actually suck pretty hardcore.
So. Fandom is awesome. Anyone can get into it and make it their own. Origional work is so much harder. I'd still rather be writing origional work though.