20 Films That Starred 3 Or More Harry Potter Actors

20. The Boat That Rocked (2009)

Potter Actors Featured: Rhys Ifans, Emma Thompson, Kenneth Branagh, Bill Nighy

This film underwent a ridiculous number of international title re-brands, coming out as Pirate Radio in North America, Good Morning England in France, Radio Rock Revolution in Germany, I Love Radio Rock in Italy and Rock Wave in Russia. In its native UK, however the film was released as The Boat That Rocked.

Richard Curtis' film focuses on a pirate radio station in the United Kingdom broadcasting during the 1960s and tells the story of its eccentric crew of DJs. The film made use of an ensemble cast, four of whom are former Potter actors. Bill Nighy (Rufus Scrimgeour) stars as Rock Radio head honcho Quentin, as does Emma Thompson (Professor Trelawney) as his daughter.

Rhys Ifans (Xenophilius Lovegood, father of Luna) portrays Gavin Kavanagh, a massively popular DJ brought out of retirement by Quentin, and Kenneth Branagh (Gilderoy Lockhart) does a great job playing Sir Alistair Dormandy, the government minister trying to stop the party.