A24 | 20th Century Fox | Warner Brothers
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Twins and doubles are endlessly fascinating film subjects. From Buster Keaton to Alfred Hitchcock to Denis Villeneuve in 2014, directors have used lookalikes to underline themes. But they're also used in fun ways, as in comedies like Twins or Freaky Friday. Click ahead to see some of our favorite twins and doppelgangers from popular movies.

Note: There are a couple spoilers included but the slides are marked.