Complex sentence: Alison Elizabeth "Ali" Larter (born February 28,1976) is an American actress best known for playing the dual roles of Niki Sanders and Tracy Strauss on the NBC science fiction drama "Heroes".
Split into simpler sentences: Alison Elizabeth "Ali" Larter (born February 28,1976) is an American actress. She is well-known for playing the dual roles of Niki Sanders and Tracy Strauss on the NBC science fiction drama "Heroes".