Friends star Courteney Cox has a habit of forgetting things and she doesnt remembereven guest stars appeared on her show. Cox, who played Monica in the hit series, has accepted that sheis absent-minded and doesnt recall many episodes of the popular show, The Sun online reported. "Mymemory is the worst of anyone I know. Every time I see an old episode of Friends I'm surprised by whathappens because I just don't remember them, the actress said. She added, "People come up to me andsay, 'I loved the episode so-and-so was in. And I'm thinking, 'Really? That person did Friends?'".