Two books I have had a chance to look through, though are Hugh Hewitt's and Maureen Dowd's. The Insta-Wife read Hewitt's book and liked it a lot; it looked pretty good to me, too, though it's an interesting mixture of big-picture and grassroots rolled into one.
Dowd's book is, basically, a bunch of her columns sorted by topic. If you like her columns, you'll like the book. If you don't, there's not much value-added.