"A Comedy Tonight!" It's the glorious old-fashioned farce at the Forum in one of Broadway's funniest musicals ever. It's Stephen Sondheim at his finest and funniest. This "forum" is a whirlwind of mistaken identities, doltish disguises and perilous pratfalls. Enjoy the outrageously convoluted plot about the conniving Roman slave, Pseudolus, who plays matchmaker for his young master in his ceaseless scheming to win his freedom.