The House of Yes (1997) review

Marty (Josh Hamilton) brings his fiancée Lesly (Tori Spelling) home to meet his peculiar family - his single mother (Geneviève Bujold), his socially-awkward brother (Freddie Prinze Jr.) and his kooky sister Jackie-O (Parker Posey), who LARPs as Jacqueline Kennedy Onassis and reacts very poorly to the fact that Marty's engaged.  It never manages to be anything more than a filmed version of a stage play (by Wendy MacLeod) and I don't think the JFK assassination stuff really 'ties into' anything except to be "quirky," but Posey is just fantastic in her role (it's one of her best), as Waters lets her Wave the Crazy Flag high and her manic energy single-handedly saves it from being a disaster.  Tori Spelling got a lot of criticism back in the 90's for being a star due to nepotism, but decades later she seems to fit the role of the "innocent one."  The best question posed by Ms. Posey: "Do they have paintings in Pennsylvania?"