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Orphan Black (BBC America)
The sci-fi series was a stealth player for BBC America with an intriguing concept: Sarah, a grifter with serious parenting problems, discovers that she's a clone. All credit goes to leading lady Tatiana Maslany, who imbues each clone with such individual spirit, it's difficult to remember that she's the only person portraying them all. The show celebrates its sci-fi tendencies without getting bogged down in them, and once you add in a healthy helping of conspiracy, feisty humor and a dash of the futuristically bizarre, you get indisputable reasons to join the Clone Club.