October 1965 at LHR. (G-APEB?) Go-around in fog. Highlighted the dangers of excessive reliance on the VSI. The pilot over-rotated, stalling the Vanguard. [The accident also resulted in the concept of an "Approach Ban" if the RVR is below limits, initially 600m for a (Cat. I) ILS.]
On T/O, "ground effect" at rotation also has something to do with the VSI dipping. ILVSIs (instant lapse) and "inertial" VSIs have reduced the problem.