Meet a dewy-eyed ingenue, a gee-whiz tenor, stuck-up stars, hard-up producers, brassy blondes and "shady ladies from the '80s." They're all denizens of 42nd Street, belting out ageless Harry Warren/Al Dubin songs and tapping out Busby Berkeley's sensational Depression-lifting production numbers. The put-on-a-show plot spins merrily, full of snappy banter and new faces Ruby Keeler (her movie debut), Dick Powell and Ginger Rogers. The sho