For some actors, growing a beard is a necessary part of a role.
For others, it's a way of distancing themselves from their clean-cut image, or maturing their look. Whatever the case may be, beards have enjoyed a patch of popularity (hah) both on and off the screen with actors.
Here, we've documented some of the most noteworthy beards in movie history, but can you place the beard with the actor and the movie? Keep in mind, we have a separate quiz for moustaches.
As you can probably imagine, some of the beards' owners may be instantly recognisable - so what we're looking for in some cases is in what movies those beards popped up in.
If you or someone you know is taking part in Movember this year, go to movember.com and donate to their page.