Harry Potter stars test their American accents (Video)

Now that the Harry Potter movies are finished filming, the young stars have the opportunity to show up in other films. Could they follow in the footsteps of Hugh Laurie, Gerard Butler and Minnie Driver by passing for American on our big and small screens? MTV's Josh Horowitz is determined to find out. See how Daniel Radcliffe, Rupert Grint, Emma Watson and Tom Felton deal with essential American phrases below: