Julianne Moore is slowly proving herself to be one of the greatest actors of her generation and with the HBO film "Game Change," she might solidify this label.

"Moore, 51, has just one line in the trailer - in which she accepts the Republican nomination for vice president in 2008 - but she delivers it in the classic Palin voice, one previously imitated to perfection by Tina Fey," reported People.com about the chameleon-like transformation of Moore into the former Alaska governor.

"Game Change" is a Jay Roach-helmed HBO film about the 2008 presidential campaign, where Palin ran as John McCain's running mate for vice president. The film is based on a book by John Heilemann and Mark Halperin. It is divided into three parts: one is about the Democratic primary race, another is for the Republican primaries, and the third part is about the campaign between Barack Obama and McCain.

The trailer mostly consists of McCain and campaign manager Steve Schmidt, portrayed by Ed Harris and Woody Harrelson respectively, talking about how they will win the elections, that will essentially lead to the end of the trailer that will show Moore accepting the nomination for vice president.

Despite having one of the prettiest faces in Hollywood, Julianne Moore is not just that. She has been proving one movie after another that she is a force to be reckoned with. Some of her most notable movies are "Magnolia," "The Hours," and "The Kids Are All Right."

Her most recent movie is the romantic comedy "Crazy Stupid Love" which also starred Steve Carell, Ryan Gosling, Emma Stone, and Marisa Tomei.

The best part of the trailer is the anticipation it gives you about how Moore will be able to play Palin. She might have gotten the looks right with every last strand of her blonde highlight, but it is way too early to judge whether Moore got the entire accent of the former Alaskan governor with just that one small line at the end.

See the trailer below: