Helen Mirren was 58 in The Hitchhiker's Guide to the Galaxy when she played the character 'Deep Thought'.
That was over 19 years ago in 2005.
Today she is 78, and has starred in 148 movies in total, 66 of those since The Hitchhiker's Guide to the Galaxy was released.
In The Hitchhiker's Guide to the Galaxy, I think Helen Mirren looks: