Don't train yourself too much on the NASA videos without understanding your type. This came up recently in the Colgan crash. NTSB report:
The NTSB notes that, at the public hearing for this accident, a Bombardier engineering manager testified that the Q400 was not susceptible to tailplane stalls. The Bombardier official described the flight testing—the 0 G pushover maneuver—that was performed by Bombardier and Transport Canada to make this determination. The Bombardier engineer explained that the maneuver, which was conducted with ice accumulation on the airplane’s tail (with both natural icing conditions and artificial ice shapes), involved pushing the control column forward to lower the nose of the airplane and increase the airplane’s descent rate. The Bombardier engineer further stated that this maneuver tested “the most severe condition” (that is, the most negative tailplane AOA) and that the airplane showed no evidence of tailplane stall characteristics, even at -0.2 G.
later
Also during public hearing testimony, the FAA’s manager of air carrier training stated his belief that no airplanes currently being operated by Part 121 air carriers were susceptible to tailplane stalls. He recalled that the early versions of two airplanes, the Saab 340 and the Jetstream J31, had tailplane stall tendencies but stated that these tendencies were corrected by airworthiness directives and manufacturing changes. The FAA manager further indicated that training programs should not lead to negative training or possible miscues regarding how flight crews are to handle a full wing stall.