In March of last year, Disneyland unveiled a little tribute to Robert and Richard Sherman, the two gentlemen responsible for so many memorable songs heard in that park and elsewhere. It was a window on Main Street that now features their names. As part of the dedication ceremony, they brought out two actors (sadly, unidentified) to portray characters from the old Carousel of Progress, for which the Sherman Brothers wrote the music. Here then is a little medley of some of the Shermans' Greatest Hits…