B&N: Opening the Doorway for a Generation of Dark Fantasy Readers

Here's a rare post this week not about the upcoming film adaption of The House with -- you know the rest.  Jeff Somers praises John Bellairs at the Barnes and Noble Sci-Fi and Fantasy blog, noting the novels:

...recognize that kids can handle being scared, and don’t need to be coddled. They capture the spirit of youth without condescending to it, and have continued to do so even as the middle grade and young adult markets have matured—for many in a later generation of readers, Bellairs’ books filled the Potter-sized hole in their hearts after that series ended.

Somers goes on to give his take on a Bellairs top ten ... with the book the adaptation is based on leading the way at number one. What books make up your ten favorite John Bellairs books?