She was taken off life support on Tuesday, Dec. 29 and in the early morning on Wednesday, Jan. 27 she died when her lungs and kidneys failed.
Besides her role as the spirtual medium in the "Poltergeist" movies, Rubinstein also played Ginny Weedon, the dispatcher for the Sheriff's Department on "Picket Fences," from 1992 to 1995, when her character was killed off in typical weird "Picket Fences" fashion by falling into a freezer.
More recently Zelda's distinctive voice could be heard narrating "The Scariest Places on Earth" for ABC Family.
We also loved her small role as the organist in the John Hughes movie "Sixteen Candles." "Oh, I need a drink." Classic.
Probably her most famous line, made even more famous by Jim Carrey in "Ace Ventura: Pet Detective," was uttered after Diane Freeling (Jo Beth Williams) brought daughter Carol Anne (Heather O'Roarke) back from the evil spirits on the other side in the first "Poltergeist" movie:
"This house is clean."