Actor/Actress with the Most Impeccable "Nerd" Credentials
She first came to mind when I read the title of this thread. How many other Hollywood actors have a science PhD ? Unfortunately she's also an a anti-vaxxer nutjob so gets marked down.
But then I read the thread which redefined "nerd cred" as "being in comic book/sci fi/fantasy movies", which by that standard she has zero unless you count The Big Bang Theory.