I've seen most of them mentioned except for the squirting.
Legs shaking after sex is great

I love when her hands are grasping at anything nearby...usually the sheets or my back.
I'll add crying to the mix too, I've seen my wife to break down in tears of joy/passion during her orgasm if her mood is right.
Although it's not cock related oral/G-spot brings on an intense full body orgasm with convulsive shaking that is amazing
I'm by no means as huge as some guys here @ 7x6. Just enough to make it exciting I guess.