is back just one night after their emotional Most Memorable Year Night, and this time took the celeb contestants back to their high school days with Prom Night!Disco hits, retro style and a whole lot of fun, Tuesday's Prom Night proved to be the perfect balance to Monday's heartstring-tugging theme and brought out the best from a number of talented couples.Host Tyra Banks and co-host Alfonso Ribeiro emceed the proceedings as stalwart judges Carrie Ann Inaba, Len Goodman, Derek Hough and Bruno Tonioli critiqued and scored the fun, high-energy performances.Here's a look at some of the best, most Prom-worthy routines of the night, and a breakdown of which celebs are already leading the pack as front runners in the race for the Mirrorball trophy.