During her career, actor Dame Maggie Smith shone in roles as varied as a maverick schoolteacher, a witch in the Harry Potter film series, and Downton Abbey's Dowager Countess of Grantham, a part which won her three Emmys. Here is a round-up of her most famous roles: Professor Minerva McGonagall From 2001 to 2011, Dame Maggie played Hogwarts' Professor Minerva …
