I love it, too. There’s a sweetspot, maybe around -10F or -15F (if there’s an expert out there, I’d like to meet you and buy you a drink), where your beer freezes along the inside of the bottle when you take a “sip.” Pure Heaven.
It is great being able to chill stuff on the back porch, but remember that if you do it with hard liquor, don’t do it for too long—because it has a much lower freezing point, it can either do serious damage or even kill you if left out and then consumed in really low temperatures.