What is Maggie Smith most famous for?

 Maggie Smith is most famous for her distinguished career as an actress in film, television, and theater. She gained international recognition for her roles in the "Harry Potter" film series as Professor Minerva McGonagall and in the television series "Downton Abbey," where she portrayed the sharp-witted Dowager Countess Violet Crawley. Additionally, Smith has received numerous awards, including multiple Academy Awards and BAFTA Awards, highlighting her talent and contributions to the performing arts. Her work spans several decades, making her a beloved figure in the entertainment industry.