Imperial is a brand of margarine

Margarine

Margarine , as a generic term, can indicate any of a wide range of butter substitutes, typically composed of vegetable oils. In many parts of the world, the market share of margarine and spreads has overtaken that of butter...

 distributed by Unilever

Unilever

Unilever is a British-Dutch multinational corporation that owns many of the world's consumer product brands in foods, beverages, cleaning agents and personal care products....

. It is known or best remembered for early commercials in which a person who recently ate something with the margarine would have a crown

Crown (headgear)

A crown is the traditional symbolic form of headgear worn by a monarch or by a deity, for whom the crown traditionally represents power, legitimacy, immortality, righteousness, victory, triumph, resurrection, honour and glory of life after death. In art, the crown may be shown being offered to...

 appear on their head (accompanied by a four note fanfare).

The commercial has inspired sporadic cultural references throughout the years. The commercial was spoofed in episodes of The Carol Burnett Show, Green Acres

Green Acres

Green Acres is an American television series starring Eddie Albert and Eva Gabor as a couple who move from New York City to a country farm...

 and Parker Lewis Can't Lose

Parker Lewis Can't Lose

Parker Lewis Can't Lose is an American teen sitcom that originally aired on FOX from September 1990 to June 1993. During the last season, the series sported the simpler title Parker Lewis. The series was produced by Columbia Pictures Television and was strongly influenced by the feature film Ferris...

. On a 1982 episode of Georgia Championship Wrestling

Georgia Championship Wrestling

Georgia Championship Wrestling was a professional wrestling promotion whose self-titled TV program aired in the 1970s and 1980s on Atlanta, U.S., superstation WTBS. Though based in Atlanta, the company also ran live wrestling shows throughout its geographic "territory" of Georgia Georgia...

aired on WTBS, wrestler "Rowdy" Roddy Piper

Roddy Piper

Roderick George Toombs , better known by his ring name "Rowdy" Roddy Piper, is a Canadian semi-retired professional wrestler and film actor who is currently signed to WWE. In professional wrestling, he is best known for his work with WWE...

 gave an interview wherein he mentioned Imperial Margarine by name in the course of mocking his opponent, Jerry "The King" Lawler.