Franchise's final installment offers the epic Battle of Hogwarts
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Dame Maggie Smith in 'Harry Potter and the Deathly Hallows Part II'
In the "Harry potter" films, Dame Maggie Smith plays Professor McGonagall, a strict instructor who has always looked out for Harry's best interests. She would die defending Hogwarts, if need be.
Smith has had an illustrious career on stage and screen, and has been nominated for six Oscars (with two wins -- "The prime of Miss Jean Brodie" and "California Suite").