By Migele.Ranko's Bet: The Silent Master
The Crossover is: El Hazard / Sailor Moon / Ranma 1/2
This has Ranma as a Sailor in a Fuku, but it is definately a new one. This is from the same author that brought us Sailor Santa, and it's pretty interesting to say the least.
According to the author on the page, its about 1/2 done, but since this was written back in August, I am going ahead and listing it here.