I've only read two of the nominees, but I have to say Little Brother edges out Graveyard Book for me.
Best Dramatic Presentation, Long Form:
I've seen all but one of these. Not too thrilled with any of them, but narrow it down to Dark Knight and Wall-E and I go for Wall-E.
Best Dramatic Presentation, Short Form:
I'd go for Doctor Who, but I recently rewatched both of the episodes nominated and they're not that great. Not like Blink, or a few other good ones. So I'm going to go for Dr. Horrible's Sing-Along Blog for this one.
Those are the three I'd feel qualified enough to vote for. But if I went so far as to pay to vote, I might make an effort to decide on a few other categories. Hunt down some stories or whatnot.
I'll conclude with some numbers, which I'm sure someone else has compiled, but it pleases me to count.
Novel: 5 men, 0 women
Novella: 4 men, 1 woman
Novelette: 4 men, 1 woman
Short Story: 3 men, 2 women
Related Book: 4 men, 3 women (afaik)
Graphic Story: 15? men, 5? women (more uncertain on this)
Best Editor, Short: 3 men, 2 women
Best Editor, Long: 3 men, 2 women
Professional Artist: 5 men, 0 women (afaik)
Fan Writer: 4 men, 1 woman
Fan Artist: 4 men, 1 woman (afaik)
Best New Writer: 4 men, 1 woman (afaik)