Her stars an actress.
The film follows Theodore Twombly -LRB- Joaquin Phoenix -RRB- , a man who develops a relationship with Samantha -LRB- Scarlett Johansson -RRB- , an intelligent computer operating system personified through a female voice.
Scarlett Johansson -LRB- -LSB- dʒoʊˈhænsən -RSB- born November 22 , 1984 -RRB- is an American actress , model , and singer.
