Certain critics have recently ranked the best opening numbers in Broadway history; of course, "Hairspray" and "Oklahoma" and "Sweeney Todd" all performed well. Marc thought the number one slot would go to "The Sound of Music"; I was thinking of "Chicago" or "The Music Man." In fact, the spot went to "Fiddler on the Roof." On further reflection, I'd give my vote to "Guys and Dolls"--a show that didn't get a mention in the top ten. Frank Loesser wrote "Guys and Dolls"; Loesser was a favorite of Sondheim's. Loesser immediately plunges you into the world he is creating; he gathers a group of racetrack low-lifes, who sing about horses. Each guy is certain he can see the future. "I got the horse right here. The name is Paul Revere...." "For Paul Revere, I'll bite; I hear his foot's all right....Of course it all depends if it rained last night...." "I'm ...