One episode from each Joss series nominated for a Hugo in the same category (plus two Enterprise eps I'm not concerned with):

Nominations for the Best Dramatic Presentation, Short Form Category:

Buffy the Vampire Slayer, "Conversations With Dead People"
Firefly, "Serenity"
Angel, "Waiting in the Wings"


Do they ever have three-way ties, 'cause I can't pick just one (though I am leaning toward "Serenity," but I think that has more to do with everything that happened to the series and the general feeling of FOX FUCKING SUCKS that I still have).