Shows like “All That” and “The Amanda Show,” among others, were consumed obsessively by children across the country and defined comedy for a generation. But behind the cheerful screen presence in these shows, with questionable jokes and over-the-top skits, “Quiet on Set” reveals a treacherous environment rife with accusations of abuse, sexism, racism and inappropriate dynamics with its underage stars and crew members. This docuseries exposes the toxic culture behind some of the most iconic children's shows of the late 1990s and early 2000s.