I am putting this series of stories first because it is my all time favorite. Xander has always been one of my favorite characters and this series showcases the butterfly effect to perfection. There are so many crossovers that it is hard to pinpoint my favorite but I got to a admit seeing him deal with Faith's father was hilarious. While Tenhawk started the series and maintains it there are other artists that contribute. You can download the whole series in a zip file. There are 140 stories at this time and not all are complete but even those are excellent. The writing is excellent, the action is not only intense it is most important believable. The crossovers are done seamlessly with distorting the characters.
http://www.grandt.com/Journey/stories/
