Buddy, me too. The position around 0:50 is also my favourite too. In this position, her thigh is widely spread and I can deeply penetrate into her, making her very excited. Also I can touch her tits and clitoris too. She usually has climax very quickly.
the position they use, especially around 0:50, is one of my favorites to use with my wife! You don't see it very often. The nice thing about it is his thigh rests against her pubis and clit. I like to pull my wife down slightly more so her butt rests on my lower thigh while my upper thigh is against her pubis, clit, and stomach... and once in that position she grabs my upper thigh and humps up against it like a lust-crazed horny woman until she orgasms! Usually I ejaculate about the time of her first orgasmic moans I am so excited by then! It is really good!!!