Im surprised to have not seen this thread on these forums recently. Basically, answer the question in the post title with justification for your choice. Some people may think this question is stupid, but I think it provides interesting insights as to what the general population thinks is important. Ill start:
For me, this would have to be the Atlas Stone lift.
I love the atlas stones because it gets virtually every muscle in the body!
The start of the lift is very much like a deadlift, requiring one to have a strong grip and lower back with the added requirement of a strong chest and biceps to squeeze the stone.
The middle portion of the lift, where the stone rests in the lifters lap is similar to a paused deep squat.
Finally, lifting the stone to the platform (or your shoulder) is similar to a front squatting movement with the added difficulty of requiring superb back and chest strength to hold the stone in front of you.
The only weakness I can see is in pressing strength, which the stone does not require much of.