GRE CS Subject Test Prep?

coaxial asks: "So it's that time again to consider taking the GRE. While there are many resources on the web about the general test (mostly vocabulary building), the computer science subject test seems to be lacking. This is a shame, since this test covers pretty much everything in the undergrad curriculum. So I ask the grad student readers of Slashdot: what resources, besides the one book I've found, did they use."