I'd seen it before, but others here hadn't. I'd forgotten some of the details, but I remembered the key surprises. So I wallowed in the old-fashioned acting, especially Joan Fontaine moving her eyebrows asymmetrically in a way that only a comic actress today would use...
"Rebecca" won the best picture Oscar in 1940, beating "The Grapes of Wrath." I guess people preferred watching the melodramatically exaggerated travails of rich people in gigantic houses more than they liked watching the melodramatically exaggerated travails of poor people in gritty hovels.