This is my first reading challenge too, usually I just mooch around the bookshelves seeing what takes my fancy, so I'm really looking forward to this. At the moment this list is just from books I own so I know I can get my hands on them - if I can track down which shelf or pile they are in! I am intrigued by the many authors on the list that I've never heard of, though, and may well increase this list as I look out for books by them.
G K Chesterton: The Napoleon of Notting Hill
I tried to read this when I was about twelve (as I was a fan of the Father Brown stories) and remember being completely baffled by it. I'm hoping that the many years since will make it more comprehensible but I'm still a bit nervous of it.
W Somerset Maugham: Cakes and Ale
I'd forgotten I even owned this book, just found it hiding in a corner.
J K Huysmans: A Rebours (or Against Nature as I'll be reading it in translation)
D H Lawrence: Lady Chatterley's Lover
Oh dear, this really will be a challenge - I have never wanted to read this book, as I'm very prudish, but it's about time to brave it. I hope to be pleasantly surprised.
George Bernard Shaw: Pygmalion
Radclyffe Hall: I can't remember what it's called or find it at the moment, but I know it's here somewhere and it's not The Well of Loneliness.
And something by Scott, he's one of my favourite authors so it could be anything.