Sad. But I can surely assume that all on here are familiar with his discworld novels (starting with 'The colour of magic', 1983). I most liked the 'witches' sub-series, beginning with 'Wyrd sisters', 1988. And there's "Reaper Man" (1991) - when read between the lines, it's probably the craziest love-story ever written.
RIP.
RIP.
Curious: the first recorded successful pregnancy brought forth a murderer...