Chuck Barney East Bay Times DONâT MISS: âMomâ â Time for a big group hug. The warm-hearted sitcom that dared to tell stories about recovery from alcoholism and addiction â and brought Allison Janney a pair of Emmy Awards â 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. (9 p.m. Thursday, CBS). Other bets SUNDAY: Itâs the moment that passionate fans of âWhen Calls the Heartâ have patiently waited for. In the Season 8 finale, schoolteacher Elizabeth Thornton (Erin Krakow) finally realizes which man sheâs meant to be with. So whoâs the lucky guy â Nathan or Lucas? (9 p.m., Hallmark Channel).