A solid Spanish accent, like Alfred Molina uses to portray Diego Rivera in “Frida,” makes a performance all the more believable. A questionable one, however, like Al Pacino uses as Tony Montana in ...

In Disney’s “The Princess and the Frog,” the firefly Ray says he has a Cajun accent because he was “born and bred in the bayou!” While that may be true for Ray, the voice actor portraying him, Jim ...