SEASON PREMIERE: It’s Season 3 for Sharon and Ron, the very unlikely couple played by Sharon Horgan and Ron Delaney on this sharp-witted Amazon comedy series. When they started as a “couple,” they were a weekend hookup that went a different way after she became pregnant. Now, to begin the new season, they now have two kids, and these new episodes will include infidelity, addiction, unemployment, and more. And supporting player Carrie Fisher, who finished filming this season of Catastrophe weeks before her sudden death, appears for the last time as Rob’s mother.