I have never seen the Home Alone movies or Beetlejuice. The only films I remember O'Hara from is Wyatt Earp and Waiting For Guffman. But my fond memories of O'Hara are from her years on SCTV, IMO funnier than SNL. And O'Hara was great in that show, surrounded by some very talented comedians.
"I’m not going to read Time Magazine, I’m not going to read Newsweek, I’m not going to read any of these magazines; I mean, because they have too much to lose by printing the truth"- Bob Dylan, 1965