The stylish state-of-the-art locomotive by David Rockwell gleams in brilliant Art Deco glory. But that's nothing compared to the practically nuclear glow that comes off Kristin Chenoweth, whose singular talent and skills are tailor-made for a role originated on Broadway in 1978 by Madeline Kahn. Chenoweth is a stick of blond dynamite, a virtuoso comedian and singer. She uses her petite body, ample bosom and middle finger for a laugh. She hits every high C in the joyous and eclectic score that pushes the plot along expertly... In the show's title song, it comes out that the Twentieth Century famously gives passengers 'nothing but the best.' This production, fizzy and dizzy entertainment, does likewise.