There is truly nothing like "Riverdale." It's unlikely that anyone thought, years ago, that "Archie Comics, but make it dark and twisty" was a pitch that would turn into a bonafide phenomenon. Yet, somehow, it worked, transforming the clean-cut comics characters into teenagers who get involved with gangs, run speakeasies, join cults, uncover mystical happenings, and have illicit affairs (all while still going to class and football practice, of course). These days, "Riverdale" has become more of a punchline for its increasingly bizarro plots, but the go-for-broke guts of its initial storytelling will ensure that it's always remembered among the greats of teen TV.