Catherine O'Hara has died at 71. The Emmy-winning actor was known for her roles on “SCTV,” “Schitt's Creek,” and the two “Home Alone” films.

Catherine O'Hara, who died Jan. 30, previously opened up about a rare congenital condition called dextrocardia with situs inversus.

O'Hara observed people closely; she found the tics, the mannerisms, the specific beats of drunkenness and used them to open us up to her characters' frailty, their vulnerability, their humanity.

Catherine O’Hara's prodigious comic gifts were displayed in roles over five decades. Her eccentric matriarch Moira Rose in “Schitt's Creek” brought her legions of new fans — and an Emmy — and elevated an arcane new vocabulary.