WATCH: Helen Mirren makes an Oscar acceptance speech - on helium
Jimmy Fallon is one of the few chat show hosts who can get guests to do the unexpected, and Helen Mirren was no exception.
Mirren (69) won an Oscar for playing the Queen in 2006 and Fallon started out by asking her about the Queen's accent and complimenting her on her own "proper" accent.
He then wondered what her accent would sound like on helium and produced two balloons.
Mirren, game for a laugh as ever, answered his questions and made a pretend Oscar acceptance speech with a ridiculously high pitched voice. Gas...