The book compiles a number of projects from Scroll Saw Woodworking & Crafts magazine.It looks pretty good -- especially the wooden gear clock depicted on the cover and detailed in pages 120 to to 134. Those 14 pages alone were enough to convince me to pre-order it.
Product Description from Amazon
Featuring some of the most popular projects from sold-out issues of Scroll Saw Woodworking & Craftsmagazine, the projects in this collection include a wide range of clock styles, such as grandfather clocks with intricate fretwork, classic pendulum clocks, and whimsical desk clocks. Detailed plans for more than 25 projects cover the entire process with step-by-step instructions, complete materials lists, instructions on buying and inserting clock parts, cutting the clock using a scroll saw, assembling the pieces, and applying finishes.
Here's more information on Big Book of Wooden Clocks: 29 Favorite Projects & Patterns .