DON’T MISS “MOM” Time for a big group hug. The warm-hearted sitcom that dared to tell stories about recovery from alcoholism and addiction – and brought Allison Janney a pair of Emmy Awards – closes the curtain on its acclaimed eight-year run. In the series finale, Bonnie (Janney) gains a new outlook on her sobriety after dealing with difficult news. Also, Jill (Beth Hall) and Andy (Will Sasso) take a big step in their relationship. (Thursday, 9 p.m., CBS) OTHER BETS SUNDAY: It’s the moment that passionate fans of “When Calls the Heart” have patiently waited for. In the Season 8 finale, schoolteacher Elizabeth Thornton (Erin Krakow) finally realizes which man she’s meant to be with. So who’s the lucky guy – Nathan or Lucas? (9 p.m., Hallmark Channel)