Games Done Quick, the marathon that raises millions of dollars for charity twice per year, and speedrunning more generally, owes its existence to glitches. Though runners show off their skill and dedication, almost all of them rely on the game behaving in unintended ways, doing things that people playing casually would never experience.
Despite this, runners often make off-hand comments about the games being broken, or worse, the developers being lazy. The latter is obviously generally untrue and unfair. But spare a thought for the humble glitch itself, and how they make this whole wonderful endeavour possible.