Mort is my favourite.
Closely followed by Reaper Man, Soul Music and Monstrous Regiment (which is where my username comes from).

The impressive effect was rather spoiled by a patch of ice.
OH, BUGGER.
( Maladicta, Tue 14 Jul 2009, 13:38, 1 reply, 16 years ago)

.
That's my favourite bit in any book, ever!
( Agnostic Antichrist Baltimora, Tue 14 Jul 2009, 13:58, Reply)

Death rocks, he really does :)
I COULD MURDER A CURRY.
( Maladicta, Tue 14 Jul 2009, 14:03, Reply)

Also...
I AM DEATH, NOT TAXES. I TURN UP ONLY ONCE
( Agnostic Antichrist Baltimora, Tue 14 Jul 2009, 14:29, Reply)

But this one makes me laugh far too much
Death was standing behind a lectern, poring over a map. He looked at Mort as if he wasn't entirely there.
_{YOU HAVEN'T HEARD OF THE BAY OF MANTE, HAVE YOU?}
'No, sir,' said Mort.
_{FAMOUS SHIPWRECK THERE.}
'Was there?'
_{THERE WILL BE}, said Death, _{IF I CAN FIND THE DAMN PLACE}

EDIT: Ah well, it almost works!
( Agnostic Antichrist Baltimora, Tue 14 Jul 2009, 14:33, Reply)