10 Actors You Totally Forgot Were In Harry Potter Movies

7. Ian Brown

He's not actually an actor, but lead singer of legendary British indie rock band The Stone Roses - Ian Brown - turns up in Prisoner Of Azkaban for a very brief cameo.

When Harry gets to the Leaky Cauldron after blowing his Uncle's sister up in a rage, he walks past a wizard reading A Brief History Of Time and absent-mindedly stirring a drink wordlessly. That wizard - who must be hugely powerful given what he's doing - is played by Brown.

He's not the only musician to get a cameo: Pulp's Jarvis Cocker turns up as frontman Myron Wagtail of The Weird Sisters in Goblet of Fire (along with another member of Pulp, two members of Radiohead, one of All Seeing I and one of Add N To X).