Best Novel: The Yiddish Policemen's Union, by Michael Chabon, which had already won the Nebula; another to add to my list of joint winners once I have proper internet access again.
Best Novella: "All Seated on the Ground", by Connie Willis, which I didn't especially like but I see how it appeals to fannish humour. That makes her the first person to get her tally of Hugo awards for fiction into double figures
Best Novelette: "The Merchant and the Alchemist's Gate", by Ted Chiang. This also won the Nebula so is also on my list of double winners. I liked it a lot, though I liked "The Cambist and Lord Iron" even more.
Best Short Story: "Tideline", by Elizabeth Bear. I thought this was by far the best of the short story nominees - indeed, this was the only category (among written fiction) where I voted for the winner. Bear is only the second Hugo winner to have been born in the 1970s (and no Nebula has gone to anyone born since 1969).
Best Dramatic Presentation (Long):Stardust. This was the only one I had seen, but I really enjoyed it.
Best Dramatic Presentation (Short): "Blink" (Doctor Who). Steven Moffat makes it three in a row. People still talk of this as perhaps the best Who story ever, and in my poll it came only narrowly behind "Genesis of the Daleks". The runner-up in the Hugo vote was Paul Cornell's "Human Nature"/"The Family of Blood".
Congrats to all the winners, including in categories I haven't listed.