These pieces are interesting, but are ultimately say more about privilege and problematic anthropology than about studying the target culture.

Examples:

• racism
  • John Howard Griffin's "Black Like Me" (1961)
  • Ray Sprigle's "I Was a Negro in the South for 30 Days" (1948)
  • Grace Halsell's "Soul Sister" (1969)
  • the hijab challenge generally
• classism
  • Barbara Ehrenreich's "Nickel and Dimed" (2001)
  • Lawrence Otis Graham's "Invisible Man: Why This Harvard-Trained Lawyer Went Undercover as a Busboy at an All-White Connecticut Country Club" (1992, New York Magazine)
  • the food stamp challenge generally
• sexism
  • Carol Lynn Mithers's "My Life as a Man” (1982)
  • Norah Vincent's "Self-Made Man: One Woman's Journey into Manhood and Back Again" (2006)
• sizeism
  • Leslie Lampert's "Fat Like Me" (1993)
  • Tyra Banks's fat suit experiment (2005, The Tyra Banks Show)
• homophobia
  • Timothy Kurek's "The Cross in the Closet" (2012)
• transphobia
  • Tommy McPhail's experiment wearing women's clothes (2012)
• list at TVTropes