Paul Thomas Anderson wrote There Will Be Blood. There Will Be Blood is starring Paul F. TompkinsPaul F. Tompkins starred in Magnolia (Film)
[Human]: Do you have information on Paul Thomas Anderson the director?  [Assistant]: Paul Thomas Anderson wrote There Will Be Blood starring Paul F. Tompkins.  [Human]: I think he was in Magnolia the film. Can you tell me other stuff he did? 
He was also in Tangled and Jack Frost!