Crossovers:
Worlds Collide Fantastically: A Harry Potter/Fantastic Four Series
Part 1: http://kara-muse.livejournal.com/15085.html
Part 2: http://kara-muse.livejournal.com/15239.html
Part 3: http://kara-muse.livejournal.com/15503.html
Also, "Truth Sings Against the Stone", An Earth: Final Conflict/The
Practice Crossover.
[this is an older one I wrote. I forgot to post it before now].
http://kara-muse.livejournal.com/14640.html