[TheMetetron]

[ QUOTE ]
If you really want to look cool, look to see if a particular wine is served by the glass. If it is, you can ask for a taste before ordering a bottle.

[/ QUOTE ]

A really good restaurant will even let you taste it after you open the bottle and send it back if you don't like it. I've had a few do this for me (including, oddly, the Bellagio Buffet) though I've never sent it back because I pretty much knew what I was getting into before I ordered the wine.

Edit: Ah, now I get why they tell me to taste it. Makes more sense now. I'm always late...