Collider ranks six standout television series released since 2000, arguing that long-form storytelling has allowed characters, relationships and consequences to develop across years rather than reset each episode.

– The article praises *The Leftovers* for treating an unexplained mass disappearance as a study of grief, faith and uncertainty.
– *Succession* is highlighted as a sharply comic drama where corporate power struggles expose the Roy family’s emotional dependence.
– *Mad Men* is presented as a patient examination of identity and change within 1960s New York advertising.
– Across the selections, the author values series that use time to deepen character arcs and reframe earlier events.