Never been a huge fan of vodka - much prefer gin, which is vodka with some decent flavouring.
I remember once drinking some 100+ proof vodka a mate had brought back from Russia - we stuck it in the freezer and it poured thick and oily. Small shot glasses knocked back in one, and it got to about halfway down your sternum before there was an explosion of heat.
Don't remember feeling drunk, but there came a point where it was as if there was a big switch on the side of my head which someone had turned to "OFF".