Regarding the previous Youtube clip about a Bonanza T&G gone bad: it is strongly discouraged to do touch and goes in any retractable gear aircraft, especially Bonanzas and Barons. The reason: on pre-1984 models the flaps are on the left and the gear on the right side of the throttle quadrant, on later models the gear is on the left and the flaps on the right.
If you hit the gear handle for only a fraction of a second, the gear will become unlocked and folds under the weight. At T&G speeds on the runway, the squat switch is not guaranteed to do it's job. You see the result in the clip.