Shakespeare: Othello, Hamlet, Midsummer Night's Dream, Richard II, Coriolanus (more dramatic than Julius Caesar, which is talky and tedious), All's Well That Ends Well, Romeo and Juliet, Love's Labours Lost, Titus Andronicus. I've seen Much Ado About Nothing more than any other Shakespeare - and would like to see something else, please.
Webster's Duchess of Malfi; Middleton's Revenger's Tragedy; Massinger's Roman Actor (The Tyrant's Play)
Restoration and 18th century comedy is FUN:
Wycherley: The Country Wife (particularly the china scene - for months afterwards, no respectable woman could go into a shop and order china)
Goldsmith: She Stoops to Conquer
Farquhar: The Recruiting Officer and The Beaux' Stratagem (brilliant production by the UK National Theatre earlier this year - written on his death bed, but a healthy play, completely free from morbidity or angst)
Lessing: Nathan der Weise (humane)
Wilde: The Importance of Being Earnest (dialogue so good you can sing it)
Shaw: Pygmalion, Arms and the Man, Man and Superman
Priestley: the "time" plays
Coward: Hay Fever
Christie: The Mousetrap
Frayn: Noises Off
Musicals:
Sondheim: A Little Night Music, Into the Woods, Pacific Overtures, Sweeney Todd
Chicago]
Guys and Dolls
Fiddler on the Roof
Singin' in the Rain
Must go to play. Now. Need theatre fix.