Why is Renee Zellweger's past used in ''Oleander''?

Q Why does a snippet of Renee Zellweger’s clash with Leatherface in 1994’s ”Return of the Texas Chainsaw Massacre” appear in ”White Oleander”?

A ”Renee told me what a nightmarish experience it was making that film, and then I told her we were going to use it,” says director Peter Kosminsky, who needed a clip demonstrating the talents of Zellweger’s struggling-actress character. (The star’s rep declined to comment, but Kosminsky says Zellweger good-naturedly approved the homage.) Seems nobody wants to talk about ”Chainsaw.” ”We had a blast making that,” costar Matthew McConaughey recalled recently. ”But that’s all I’m going to say on that subject.”