Diff'rent Strokes premiered in 1978 and ran into the mid-1980s, following wealthy widower Phillip Drummond as he adopted Arnold and Willis Jackson from Harlem. Arnold, played by Gary Coleman, became the show's breakout star, and its sunny opening theme became shorthand for wholesome family sitcoms of the era. Decades of reruns kept the tune familiar, and short clips later spread through soundboards, reaction videos and nostalgic social media edits, where a few bright bars instantly signal retro television and childhood TV memories.