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His discoveries include Pam Grier ( who starred in four of his films - from The Big Doll House through to Foxy Brown ) , Sid Haig ( who acts in most of Hill 's classics , including Spider Baby ) and Ellen Burstyn ( who starred in Pit Stop ) .
 Pam Grier, Sid Haig, Ellen Burstyn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pam Grier, Sid Haig, Ellen Burstyn