Patty Duke

Patty Duke (Shout Factory)

Then most famous for her Oscar-winning work in 'The Miracle Worker," the title star marked her last season as look-alike cousins Patty and Cathy in the mid-'60s ABC sitcom co-created by later best-selling novelist Sidney Sheldon.

The relatives get to meet some pop-culture icons of the time, thanks to guest appearances by singer Frankie Avalon and actor Troy Donahue. *** (Not rated)

Buy 'The Patty Duke Show: The Complete Third Season' on DVD.