I haven't seen all the plays - by a long chalk - but I've been lucky enough to see some wonderful productions over the years, particularly when I lived in London.

Memorable ones include:

Peter O'Toole as Shylock and Dorothy Tutin as Portia in "The Merchant of Venice" - Theatre Royal, Stratford-on-Avon, RSC, 1960

Donald Sinden as Malvolio, Judy Dench as Viola in "Twelfth Night" - Aldwych Theatre, London, RSC, 1970 (I think)

Peter Brook's direction of "A Midsummer Night's Dream" - Aldwych Theatre, London, RSC, 1970

All alive in my memory as though it were yesterday.