The Norman conquests
This brilliant comic trilogy details the amorous exploits of Norman, assistant librarian, whose one aim is to make the women of his life happy - these women being, as it happens, three sisters, one of them his wife, who can't wear contact lenses because "life with Norman is full of unexpected eye movements". Each play stands uproariously on its own yet interlocks with the others to form an ingenious Chinese puzzle of successive relations.