Although they were quite scarce, I had some hands-on time with the new 17 MacBook Pro.
On first contact, it does not look that big, at least when you compare it to the way the old 17-incher compared to the old MacBook Pros maybe it's the tapered edges, I don't know. Surprisingly, it feels heavier than it looks (those damn edges again!), and you really feel the extra pound compared to the 15" model. It also feels very rigid, thanks to the Unibody and non-removable battery.