RICHARD: Oh, if only I could’ve seen Emily hiding in the bushes. It’s like a play by Moliere.
Jean-Baptiste Poquelin (1622-1673), known by his stage name Molière, French playwright, actor, and poet, widely regarded as one of the greatest writers in the French language and world literature. His works include comedies, farces, tragicomedies, comédie-ballets, and more. His plays have been translated into every major living language and are performed at the Comédie-Française more often than those of any other playwright.
Richard may be thinking of his 1665 comedy Don Juan, where Don Juan’s servant hides in the bushes, claiming that he needed to relieve himself there.
The Annotated Gilmore Girls 