While playing the celebrity guessing game, Matthew gives Christine the clue; "You hate this guy", to which she answers "Chevy Chase". Julia Louis-Dreyfus infamously co-starred as Chevy Chase's enemy/neighbor in "Christmas Vacation".
Julia Louis-Dreyfus (Christine Campbell) and Tim DeKay (Patrick) also appeared together on Seinfeld (1989).
The wine argument is confusing. Burgundy is a region in France known for pinot noirs, so a burgundy is in fact a pinot noir. Also, the bottle is not a burgundy/pinot noir bottle, which is typically wider and more pear-shaped than a standard Bordeaux-style bottle.