Couldn't turn down this one, even though I'm not a really big fan of classical. And I'm always ready for more "dark" music. Finally a full version of Bach's Toccata and Fugue in D Minor, and Saint-Saëns "Danse Macabre"! I remember hearing a very abbreviated version of that used as the theme music for Jonathan Creek and I went around humming it to myself for days afterward.
One commenter said it totals 11 hours of music and slightly over a gig of disk space. Ye gads. The only drawback is, I betcha they don't have the files tagged with composer information. I'm going to be doing a lot of Wiki-ing for composers in the next few days.