Ben Affleck, who collected a best original screenplay Oscar in March with Matt Damon for “Good Will Hunting,” is in talks to rewrite CW Prods.’ “Suspect Zero” at Universal. While sources say “Suspect Zero” has a role that Affleck might well play, there is no commitment for him to star in the production. Affleck, who continues to be in demand as an actor, has several writing assignments lined up. He has screenplay commitments at Castle Rock Entertainment and Miramax Films. Affleck is repped by CAA. “Suspect Zero,” a thriller to which director Christian Duguay (“The Assignment”) is attached, was originally a spec screenplay by Zak Penn that sold for a reported $750,000 against $1 million. Richard Friedenberg (“A River Runs Through It”) came aboard to rewrite the project for producers Tom Cruise and Paula Wagner. Affleck appeared in last summer’s hit film “Armageddon” and starred in “Chasing Amy.”