I actually haven't too many intense pains, but I can think of a few.
-When I got toe surgery while I was awake. It was numbed but the pressure combined with cutting into my toe felt really painful.
-When my cousin jumped on my arm, it broke.
-This one actually occurred 3 times if I recall correctly. It happens when I yawn or open my mouth wide at night. It feels like a nerve is pinched between my bones, and the pain is so intense it brings me to a halt in movement, thought, and speech. It fades away gradually, though.