January 27, 2010 at 11:20 PM EST

Zelda Rubinstein, the 4-foot-3-inch actress who declared “This house is clean!” in Poltergeist, died at age 76 at 1:59 a.m today, according to her agent Eric Stevens. Rubinstein was most famous for playing the oddball psychic Tangina Barrons, but she also appeared in movies including Sixteen Candles, National Lampoon’s Last Resort, and Southland Tales, and was an AIDS activist long before it was considered fashionable, appearing in a series of AIDS-awareness advertisements.

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