The opening scene, where Bond finally gets rid of Blofeldby dropping him down a factory smokestack.
And the buildup, where he responds to Blofeld taking remote control of the helicopter by climbing along the outside to the pilot's seat.
The ski chase, certainly one of the craziest of the whole series. It starts on a ski jumping ramp. Bond is chased all the way down a mountain (even through a bobsleigh track) by Kriegler and another guy on bikes. What's even better? Bond loses his sticks, and successfully evades with only his boots and boards.
Bond kicks Locque's car over a cliff. It's the most vicious Bond ever gets with a villain's lackey during Moore's tenure, but considering all the deaths Locque has caused Bond had every reason to do it.
This is also very awesome for those who didn't get along with the otherwise Lighter and Softer Moore, because even despite Moore's typical take on Bond, the scene just works. Mostly just as an example of OOC Is Serious Business, but still...
The elaborate car chase fleeing Gonzalez's compound. Starting with Bond's Cool Carblowing up, preventing him from using all sorts of gadgets to help escape. He's stuck driving with Melina's beat-up used Citroën 2CV car, which he still manages to use to evade the Mooks and force them into trees and other obstacles.
That 2CV had a total of eleven horsepower new, and engines wear out and lose power over time. It takes some skill to evade two other cars, each putting out ten to fifteen times the engine output at the minimum.
The assault on an impressively positioned hideout atop a freestanding mountain pillar by Bond, Melina and Columbo's smugglers.
Melina Havelock pulling off a successful cross-bow shot in the back of Gonzalez diving into a swimming pool.