Kristen Bell declined to act as Veronica Mars.
Kristen Bell . Bell gained critical acclaim for her first major role as the title character in the teen noir drama television series Veronica Mars ( 2004 -- 07 ) . During her time on Veronica Mars , Bell appeared as Mary Lane in the film Reefer Madness : The Movie Musical ( 2005 ) , a reprise of the role she had played in the New York musical upon which the film was based .