Michael Sheen played David Frost in the stage play of Frost/Nixon, about the interviews between David Frost and Richard Nixon in 1977. The play was first staged in London at the Donmar Warehouse, transferring to the Gielgud Theatre and then to the Bernard B. Jacobs theatre on Broadway in New York.
Opening night party:
NPR interview with Michael Sheen and Peter Morgan:
A page from The Playbill Broadway Yearbook on Google Books:
Broadway.com Q&A with Michael Sheen (29-03-2007)