A Celebration at the Royal Court Theater A new play by Tom Stoppard , Harold Pinter acting in Beckett 's '' Krapp 's Last Tape , '' revivals of Caryl Churchill 's '' Cloud Nine , '' Chekhov 's '' Seagull '' -LRB- in a new version by Christopher Hampton -RRB- and a performance of '' Look Back in Anger '' by John Osborne , left -- all these and more are part of the 50th-anniversary celebration of the Royal Court Theater announced yesterday in London by its artistic director , Ian Rickson .