John Udell has one of the best toys ever! He's created a bookmarklet that lets you, with one click when you're surfing Amazon, see if your local library has the book.
Udell's LibraryLookup Bookmarklet works with a number of standard library catalog systems, including the Toronto Public Library (TPL uses iPac). To add the bookmarklet for the TPL, just right click on this link and choose "Add to Favourites".
So very cool!