I had a colleague do an approach to stall with pax onboard in an A310 over the Alps years ago. He wanted to show the folks some scenic alpine valley and got permission from ATC to do a couple of orbits. He turned off the autothrottles and autopilot and wrapped up the bank as he looked out to keep the landmark in view. Nobody was minding the store and the airspeed dropped until the red bars came up on the PFD tape and alpha floor was triggered. The throttles automatically reengaged and went to full TOGA thrust.
The A310 is somewhat overpowered and short-coupled for a widebody and the pitch change when both engines come up is impressive. After some minor aerobatics control was restored and the flight continued on its way. No harm, no foul except a fed and his wife were onboard in the back and reported the incident. The TXL-based crew got first class tickets to MIA for some extra sims.