Sam and Diane First Kiss It's the kiss that everyone has seen, or at least seen a parody of. Bar coworkers Sam and Diane spend the entire first season of "Cheers" bickering, but anyone could see that there's more than one kind of tension between them. In the season finale, yet another argument turns into them getting closer and closer into each other's space before admitting that their arguing is basically foreplay — and promptly locking lips. Season 1, episode 22 Image Source: NBC via Giphy