It's been parodied in Wayne's World and TV shows.

I used to love those commericals. We used to get a kick out of asking people if they had any Grey Poupon. It's sort of hilarious in hindsite to think they were marketing mustard as something elegant and upperclass. 

It is when you think about it. 

The Grey Poupon commercial is timeless, just like the Rolls Royce Silver Cloud III of the 1960's.