> We're on an old musicals kick lately, and it's just fun watching some of the big budget musicals from the 60s - when they wanted to get a whole street of people dancing, they went out and got a bunch of people trained to dance in the street.

Oh, for that you have to go back to the 1930s and Busby Berkeley. "Footlight Parade" is probably the best of that genre. At least see "Shanghai Lil".