It's so much fun browsing through all the stories! Reminds me of why I got into fandom in the first place: because I wanted more after finishing a book.
Some stories I have read and enjoyed:
The Birthday of Eternity (Terry Pratchett - Discworld) by
panjialien. Death consults Nanny Ogg about a problem.
He Kindly Stopped for Me (Crossover: Terry Pratchett - Discworld and Neil Gaiman - Sandman) by Serenissima. Death meets DEATH, with perfect characterisation and unpredictably results.
The Lady Running (CS Lewis - Narnia) by
rosehiptea. Lucy is not as innocent of the ways of fauns as Tumnus may think. Lucy/Tumnus.
The Curse of the Chalet School (Antonia Forest - Marlows series) by
ankaret. In which Miranda inquires about the twins' previous schooling, and all is revealed in a lovely family scene.
The First Year After (Dorothy L Sayers - Lord Peter Wimsey series) by
nineveh_uk. Harriet, Peter and Inspector Charles Parker must learn to live wih one another after the events of Strong Poison.
Bagatelle (Diana Wynne Jones - Fire and Hemlock) by
kestrelsan. Polly and Tom have to work out what to do after the events of Fire and Hemlock. This is a very dense book, and I'm immensely impressed that anyone has managed fanfic for it.
And there's another one!
The Story of Thomas Piper (Diana Wynne Jones - Fire and Hemlock) by
jmtorres. More post-book Polly and Tom, exploring the implications of the legend that bound (binds?) Tom.
There will be more.