Unforgettable TV commercials from the 1980s, from “Where’s the Beef?” and Spuds MacKenzie to Apple’s legendary “1984.”

Unforgettable commercial jingles from the 1990s that no one can forget, from Bagel Bites and Mentos to the songs everyone can still sing.

Television has produced plenty of couples who seemed so convincing that viewers assumed the actors must have adored each other too. Sometimes, the exact opposite was happening. Creative disagreements, bruised egos, personality clashes, and personal breakups could make a set remarkably uncomfortable. In several cases, the stars later repaired their relationships or clarified that “hate” was too strong a word. But while the cameras were rolling, these pairings prove that believable affection can sometimes be very good acting.