I love crossover fanfiction!!! But, sadly enough, I have yet to see a fanfiction that includes X-Files/Star Trek Voyager, with Seven and Mulder as a couple. Probably will never happen, but maybe I can remedy that... Anyway, my absolute, no questions down favorite xover couple, is Gohan/Ami. They're both really smart, they can both kick ass, and they're both shy. Maybe someone will a fanfiction of them. One can always hope.
Ja ne!