Thursday's TV Highlights: 'The Odd Couple' on CBS

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The Big Bang Theory Sheldon and Leonard (Jim Parsons, Johnny Galecki) have an argument, and everyone gets caught in the middle. 8 p.m. CBS

DC's Legends of Tomorrow Rip (Arthur Darvill) assigns the Legends to kidnap their younger selves when a killer known as the Pilgrim (Faye Kingslee) targets...