Froogle!

New Google BETA toy: Froogle. From the FAQ:

Froogle is a new service from Google that makes it easy to find information about products for sale online. By focusing entirely on product search, Froogle applies the power of Google's search technology to a very specific task: locating stores that sell the item you want to find and pointing you directly to the place where you can make a purchase.

It seems to have been around since December 2002, but somehow I missed it until now.