Ken Thompson flies a MiG-29 (1999)(cm.bell-labs.com)

  At 8000 meters, Vladimir took over and performed a cobra
  maneuver. He flew level and pulled up so fast that the
  plane stalled. The plane continued to move horizontally 
  in a flat stall while pointing up. At some point Vladimir 
  performed some magic and the plane leaned over horizontal
  and flew normally. The result was a loss of 300 kmph in
  seconds. This was described to me as a courtesy maneuver
  to allow tailgating traffic to pass.

  Then came the acrobatics. It was the same as the L39 but six G's instead of 
 four G's and 4000 meters altitude instead of 2000 meters. At this time I realized 
 that the ground crew had not connected my G suit to the pneumatics in the
 plane. At the bottom of every loop, my vision went from color to
 black-and-white. It happened in about a second like someone pulled down a
 no-color shade in front of my face. Shortly after that, the
 black-and-white
 faded into grey-and-grey and finally just grey. Very strange feeling.
 I didn't black out but I was able to know exactly what it would feel like.
 After the G's subsided, my vision returned in reverse sequence.