I love to have hardcover copies of books that I really like and am planning to keep longterm. Many people have enjoyed these books so a boxed set might be just the thing.
Stieg Larsson's Millennium Trilogy
I read The Girl with the Dragon Tattoo (see post) over the summer. I haven't continued with the series because The Girl with the Dragon Tattoo is our book club selection for January, but I plan to start The Girl Who Played with Fire right after our book club meeting next month.