Hi all!! Here are some links to X-cellent Fanfic. Most of them are X-files. If you know of any great fanfic or have some of your own, let me know and I'll add it to the list.
Mark of X-cellence- This site has great, award winning, fanfic. You should all check it out.
Game- This a great XF fanfic.
This is Me- This is another great XF fanfic. It is a shippy one though.

The list is small so far. I have to check some other sites. If you know of any tell me.