There are moments in our lives that we feel tethered to, where nostalgia plants its roots, and the associated memories bundle into tidy decades where we can easily revisit them. VH-1 churned out hours of content so we could revel in our past. Portlandia turned a decade into a song (raise your hand if you went to the Jim Rose Circus). Fashion trends are cut from the past and sewn into something new (or turned into chokers).