This was the first video-tapped tests I have done, and found the review of the tape to be eye opening; do most people have their tests taped?
We don't normally tape the the kyu tests. If someone wants theirs taped and brings a camera they of course can tape it. We do tape the dan tests. Well actually we tape the dan pre-tests. Basically we test and it is taped. Sensei lets the testee review the tape first and write down any thing that the testee sees that should be worked on. Next sensei reviews the tape and looks for stuff that he feels should be fixed. Next the whole class views the tape and offers up the things they saw that need fixing. If sensei feels that there really isn't that much to "fix" then he will let the pre-test stand as the actual test. If there is enough stuff wrong to warrant another go around the person is usually given 3 to 6 months to make the corrections before they take their "real" test.