Vodka: You are my favorite grain alcohol. While Absolut is a good vodka in terms of quality (and the myriad flavours it produces) it's not the best for many reasons. Not only is Absolut a horribly corrupt corporate demon, but their vodka just isn't as good as... oh... Grey Goose or Stolichnaya. Grey Goose is from France and Stoli is from the mother country. Stoli is Russian for "capital" and is always a top shelf brand. Grey Goose is beyond top shelf, despite its relativel newness (it was first introduced in the late 1990s), and it's usually kept behind the counter at package stores to deter would-be alcoholic thieves.
Another interesting vodka is Blavod. This is a dark black vodka that hails from the UK. Like other GOOD vodka, this has no natural taste or scent. It is colored with Black Catchu, from Burma. It leaves no color or stains in your mouth.
FWIW: My favorite vodka drink is grapefruit juice (or orange juice) and Stolichnaya. That or frozen stoli, neat with real tall vodka glasses and a little bucket of ice. I've noticed that you can barely taste vodka when frozen; this is a good thing.
Last factoid: Vodka USED to be made from potatos, however after finding that alcohol made this way was making people go blind, alternatives were found using grains such as rye and corn. I've heard there are still a few distilleries that do use potatoes, but this is currently not verified, nor is it particularly common.