Cynthia Nixon is thinking about who could fill an iconic spot in the cast. The 54-year-old actress appeared on Tuesday's episode of Watch What Happens Live With Andy Cohen and reacted to a fan's suggestion that fellow guest, Sharon Stone, take on the role of Samantha Jones.Kim Cattrall, who played Samantha on 's 10 seasons and in its two followup movies, has said she does not want to be reprise her role for a potential third film.«I think Sharon would be, of course, totally amazing.