So many roles. Comedic. Dramatic. Shakespearian. Harry Potterian. Downton Abbeyian.
There are few well-known actors who can trick you into believing they're playing a different character even though they're so recognizable from other roles and shows. Jimmy Stewart comes to mind. Tom Hanks is perhaps this generation's.
Maggie Smith was one of those, too. She always brought something fresh and different to each part. I can't read a Harry Potter book without her being McGonigle.
RIP, dear lady.