[colomon]

Haven't seen the movie, so it's hard to directly comment, but for what it's worth, Château d'Yquem is a very famous wine. Exactly the (rare) sort where the popular wine magazines will routinely every few years have an article reviewing how the different historic vintages are holding up -- should you drink that 1975 d'Yquem now or hold it a few more years?

It also would be a very dangerous wine to BS about if you didn't know anything about it. 1973 apparently was a lesser year. (Still, it would run you something like $500 a bottle today.) 1975 and 1976 were classic years, name those as something to skip and people will be questioning your taste. And they didn't release a wine at all for the 1972 and 1974 vintages, because they didn't think the grapes were up to snuff.

I had to look those details up because I haven't paid much attention to wine in 20 years. (Wife doesn't like it, so it's hard to justify buying even $20 bottle. Not that I ever could have afforded a Château d'Yquem.) But I still remembered the mid-70s produced a couple of really good vintages. Someone who was actively into wine could probably have given you all those details without any research.