It has to be The Vagabond King, with Kathryn Grayson and Oreste Kirkop. Kathryn muddles through this mess of horrible editing alongside Oreste, whose dialogue had to be dubbed, as he couldn't speak English. As much as I love Kathryn, there was just nothing at all she could do to save that sunken ship.
Meet Me In St. Louis isn't a bad movie at all, just boring from time ti time, in my opinion.
I agree with whoever said Brigadoon. Good for aesthetic pleasure, not much else.
Another real winner is Texas Carnival, though it is a guilty pleasure of mine. MGM started stretching for new places to put Esther Williams, and "swimming" through Howard Keel's living room was just flat out awkward. Not to mention the fact that they nearly drowned her, filming it. But we have that gem of a song, "It's Dynamite," sung by Ann Miller, which is so plainly about orgasms you have to wonder who in the world chose it and WHY the production code lackeys didn't pick up on it.
It's like writing "Norma Shearer for the win!" in a Joan Crawford biography.