Rest In Peace Sir Terry.
I have been reading Terry Pratchett novels since 1992. His books helped me get through a divorce and helped convince my current wife that I was actually interesting and not a geek. I have read and reread most of the diskworld books as well as several of his other series and stand alone novels. To know that there will be no more makes me sad.
The best Twitter comment depicts the character Death coming to claim Sir Terry.
"AT LAST, SIR TERRY, WE MUST WALK TOGETHER."