The generous actors are taking part in Britain's innovative Film Lab project at London's prestigious Actor's Centre in a bid to help wannabe stars emulate their Hollywood success.
And the centre is bracing itself for the rush.
The Actors Centre artistic director MATTHEW LLOYD says, "In the States, a lot of actors take classes on a regular basis, but the unique feature of Film Lab is that people will not be selected by only those who can pay.
"The course will run for 12 months and we will be able to use the performers when they're available. We'll fit in with their diaries."