I Dream of Jeannie aired 5 seasons on NBC from 1965-1970 and has gotten constant comparisons to Bewitched. Unlike Bewitched though, I Dream of Jeannie never jumped the shark with a major lead actor recast. Barbara Eden starred as Jeannie. She was discovered in a bottle by Captain Anthony/Tony Nelson (Larry Hagman), who became her master and later in season 1 was promoted to Major Nelson. Bill Daily was Tony's best friend Captain/Major Roger Healey, who was jealous of the powers he had with his new genie. Hayden Rorke was their boss at NASA Dr. Anthony Bellows. He was often finding strange things going on, but anytime he tried to tell the top brass ended up looking bad.
How it got this far
1st Round: defeated That Girl 7-4
2nd Round: defeated Home Improvement 11-3

The Patty Duke Show aired 3 seasons on ABC from 1963-1966. Identical twins are common. Identical cousins, not so much. Patty Duke did great in a dual role playing Patty and Cathy Lane. Cathy's father was constantly traveling, so he sent her to live with Patty's family. Patty's parents were Martin (William Schallert) and Natalie (Jean Byron). Her younger brother Ross was played by Paul O'Keefe.
How it got this far
1st Round: defeated Diff'rent Strokes 7-3
2nd Round: defeated Boy Meets World 9-3

I Dream of Jeannie defeats The Patty Duke Show 9-3 and will advance to the top 10 quarterfinals.