Greetings, everyone -- I have a number of red wines - California, australia, italy, france, and chile - a wide variety! The vintages range from 1981 - 2000. For the most part, they have been in our basement which stays relatively cool. We live in the San Francisco Bay Area. If anyone out there has a good resource for looking up wines -- not their monetary value, but if they still might be good, and drinkable it would be most appreciated.
Thanks!

Anything over 25 years old is for show and collection, not for drinking. Even when it's been stored in ideal conditions the quality would go downhill (unlike Scotch, for example). A rule of thumb is that the more expensive the wine, the longer the shelf life. Anything for $10 or under (red or white) should be consumed in 1-2 years (3 max), even when stored under ideal conditions. More commonly, wine can turn to vinegar when it's oxidized (this requires exposure to air).

I know of a good way to find out, get a bottle opener ! If I wasn't in recovery, I would invite myself over.

Yup. Open it. If it taste like vinegar, chances are its bad :)