Below are video explanations to all 100 math and verbal questions in the first edition of the practice book (pdf) for the paper-based GRE Revised General Test. You can download the practice test for free here. Note that these questions overlap with those in ETS's Powerprep II software.
Update 7/10/12: ETS has updated their practice test. This link will take you to the first edition of their practice test PDF, for which we have video explanations below.
You can find the new, second edition of the practice test here: http://www.ets.org/s/gre/pdf/practice_book_GRE_pb_revised_general_test.pdf
Update 8/24/12: We now have video explanations for the new practice test! You can find the list here.
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