I hope bitcoin will be determined whenever a celebrity/actor starts using it in a movie, then everybody would want to own and use Bitcoins
Just a celebrity's acting will have no effects on the determination of bitcoin's future. It may help to spread bitcoin to new users as it's a kind of advertising.
Bitcoin's future would be same like Paypal or Western Union's success. By replacing them, bitcoin will rule the sector of money transferring.
It wouldn't have any effect directly on bitcoin but I think it would help adapt more people into using bitcoin. More people using bitcoin means more demand, more demand means bitcoin will grow in value.