If there could be only one film that Ellen Page will be rembered by, then that film will likely be Jason Reitman's 2007 comedy-drama Juno.
Page stars as the eponymous Juno, a precocious teenager who, with the help of her classmate and boyfriend Paulie Bleeker (Michael Cera), gets pregnant. Unwilling to have an abortion and wishing to carry through with her preganacy, Juno looks to find a couple willing to adopt her baby before it is even born. Complications and hilarity ensue when the adoption goes through quite a few trials and tribulations.
Upon release, the film was met with widespread critical acclaim. Says Roger Ebert, "[Juno] is just about the best movie of the year. [...] Has there been a better performance this year than Ellen Page's creation of Juno? I don't think so." The film garnered four Academy Award nominations and grossed over $230 million on a $7.5 million budget, cementing its legacy as one of the most financially succesful independent films of all time.