36 TV shows that went on way too long — sorry

"How I Met Your Mother" dragged on. Cliff Lipson/CBS via Getty Images Sometimes, shows get canceled before their time, or they end on a high note. These shows should have ended way before their networks finally pulled the plug. "Stranger Things" lasted five seasons across nine years, and we'd argue the payoff wasn't enough. For every show that we've mourned getting canceled prematurely, there are others chugging along on season eight that have become unwatchable. We've compiled a list of 36...